Knowledge

Amblyopia

Source πŸ“

42: 246:, is a disorder of sight in which the brain fails to fully process input from one eye and over time favors the other eye. It results in decreased vision in an eye that typically appears normal in other aspects. Amblyopia is the most common cause of decreased vision in a single eye among children and younger adults. 1084:
Putting special eye drops in the stronger eye. A once-a-day drop of the drug atropine can temporarily blur near vision, which forces the brain to use the other eye. For some kids, this treatment works as well as an eye patch, and some parents find it easier to use (for example, because young children
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in the good eye, or both. Atropine appears to result in similar outcomes to patching. If there is overpatching or overpenalizing the good eye when treating amblyopia, "reverse amblyopia" can result. Eye patching is usually done on a part-time schedule of about 4–6 hours a day. Treatment is continued
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may be able to identify, already in very young children, amblyopia that is associated with strabismus, microstrabismus, or reduced fixation accuracy. Diagnosis and treatment of amblyopia as early as possible is necessary to keep the vision loss to a minimum. Screening for amblyopia is recommended in
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Amblyopia is diagnosed by identifying low visual acuity in one or both eyes, out of proportion to the structural abnormality of the eye and excluding other visual disorders as causes for the lowered visual acuity. It can be defined as an interocular difference of two lines or more in acuity (e.g. on
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may temporarily improve contrast sensitivity and spatial resolution in the affected eye of adults with amblyopia. This approach is still under development, and the results await verification by other researchers. Comparable results may be achieved using different types of brain stimulation, such as
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Amblyopia is a developmental problem in the brain, not any intrinsic, organic neurological problem in the eyeball (although organic problems can lead to amblyopia which can continue to exist after the organic problem has resolved by medical intervention). The part of the brain receiving images from
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between the two eyes. The eye which provides the brain with a clearer image typically becomes the dominant eye. The image in the other eye is blurred, which results in abnormal development of one half of the visual system. Refractive amblyopia is usually less severe than strabismic amblyopia and is
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Strabismus, sometimes also incorrectly called lazy eye, is a condition in which the eyes are misaligned. Strabismus usually results in normal vision in the preferred sighting (or "fellow") eye (the eye that the person prefers to use), but may cause abnormal vision in the deviating or strabismic eye
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because of its less dramatic appearance and lack of obvious physical manifestation, such as with strabismus. Given that the refractive correction of anisometropia by means of spectacles typically leads to different image magnification for the two eyes, which may in turn prevent binocular vision, a
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Deprivation amblyopia is treated by removing the opacity as soon as possible followed by patching or penalizing the good eye to encourage the use of the amblyopic eye. The earlier the treatment is initiated, the easier and faster the treatment is and the less psychologically damaging. Also, the
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Amblyopia begins by the age of five. In adults, the disorder is estimated to affect 1–5% of the population. While treatment improves vision, it does not typically restore it to normal in the affected eye. Amblyopia was first described in the 1600s. The condition may make people ineligible to be
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A 2014 Cochrane review sought to determine the effectiveness of occlusion treatment on patients with sensory deprivation amblyopia, but no trials were found eligible to be included in the review. However, good outcomes from occlusion treatment for sensory deprivation amblyopia likely rely on
490:. This helps to prevent the bullying and teasing associated with wearing a patch, although sometimes application of the eye drops is challenging. The ocular alignment itself may be treated with surgical or nonsurgical methods, depending on the type and severity of the strabismus. 708:
that is modified such that each eye sees separate components of the game may also help to treat this condition in adults. Furthermore, the effects of this kind of therapy may be further enhanced by noninvasive brain stimulation as shown by a recent study using anodal
607:) when the eye optics are maximally corrected. In young children, visual acuity is difficult to measure and can be estimated by observing the reactions of the patient when one eye is covered, including observing the patient's ability to follow objects with one eye. 648:
providers, Barmer, has changed its policy to cover, as of 1 April 2014, the cost of software for amblyopic children whose condition did not improve through patching. The app offers dedicated eye exercises that the patient performs while wearing an eyepatch.
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A 2013 study concluded that converging evidence indicates decorrelated binocular experience plays a pivotal role in the genesis of amblyopia and the associated residual deficits. Another study of 2013 suggests that playing a version of the popular game
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from one of the eyes, eliminating the double vision. This plastic response of the brain interrupts the brain's normal development, resulting in the amblyopia. Recent evidence points to a cause of infantile strabismus lying with the input to the
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haziness. These opacities prevent adequate visual input from reaching the eye, and disrupt development. If not treated in a timely fashion, amblyopia may persist even after the cause of the opacity is removed. Sometimes, drooping of the
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Frequently, amblyopia is associated with a combination of anisometropia and strabismus. In some cases, the vision between the eyes can differ to the point where one eye has twice average vision while the other eye is completely blind.
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Many people with amblyopia, especially those who only have a mild form, are not aware they have the condition until tested at older ages, since the vision in their stronger eye is normal. People with amblyopia typically have poor
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Treatment of strabismic or anisometropic amblyopia consists of correcting the optical deficit (wearing the necessary spectacle prescription) and often forcing use of the amblyopic eye, by patching the good eye, or instilling
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Spiegel DP, Byblow WD, Hess RF, Thompson B (October 2013). "Anodal transcranial direct current stimulation transiently improves contrast sensitivity and normalizes visual cortex activation in individuals with amblyopia".
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Grossman DC, Curry SJ, Owens DK, Barry MJ, Davidson KW, Doubeni CA, et al. (September 2017). "Vision Screening in Children Aged 6 Months to 5 Years: US Preventive Services Task Force Recommendation Statement".
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are not reliable exclusion tests for amblyopia. A person who passes the Lang stereotest test is unlikely to have strabismic amblyopia, but could nonetheless have refractive or deprivational amblyopia. Binocular
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may be all the treatment needed for some children. If this is not sufficient, treatments which encourage or force the child to use the weaker eye are used. This is done by either using a
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of an eye (deprivational). After the underlying cause is addressed, vision is not restored right away, as the mechanism also involves the brain. Amblyopia can be difficult to detect, so
557:) or some other problem causes the upper eyelid to physically occlude a child's vision, which may cause amblyopia quickly. Occlusion amblyopia may be a complication of a 4435: 2261: 3832: 1772:
Astle WF, Rahmat J, Ingram AD, Huang PT (December 2007). "Laser-assisted subepithelial keratectomy for anisometropic amblyopia in children: outcomes at 1 year".
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Those with strabismic amblyopia tend to show ocular motion deficits when reading, even when they use the nonamblyopic eye. In particular, they tend to make more
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the affected eye is not stimulated properly and does not develop to its full visual potential. This has been confirmed by direct brain examination.
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Kanonidou E, Proudlock FA, Gottlob I (July 2010). "Reading strategies in mild to moderate strabismic amblyopia: an eye movement investigation".
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Amblyopia occurs in 2–5% of the population in Western countries. In the UK, 90% of visual health appointments in the child concern amblyopia.
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Clavagnier S, Thompson B, Hess RF (November 2013). "Long lasting effects of daily theta burst rTMS sessions in the human amblyopic cortex".
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Angell LK, Robb RM, Berson FG (December 1981). "Visual prognosis in patients with ruptures in Descemet's membrane due to forceps injuries".
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that blocks some or all of the eye. Other possible causes of deprivation and occlusion amblyopia include obstruction in the vitreous and
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due to the difference between the images projecting to the brain from the two eyes. Adult-onset strabismus usually causes double vision (
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Thompson B, Mansouri B, Koski L, Hess RF (July 2008). "Brain plasticity in the adult: modulation of function in amblyopia with rTMS".
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Tychsen L (August 2012). "The cause of infantile strabismus lies upstairs in the cerebral cortex, not downstairs in the brainstem".
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These deficits are usually specific to the amblyopic eye. Subclinical deficits of the "better" eye have also been demonstrated.
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drops to temporarily paralyze the accommodation reflex, leading to the blurring of vision in the good eye. It also dilates the
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Strabismic amblyopia is treated by clarifying the visual image with glasses, or encouraging use of the amblyopic eye with an
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in the stronger eye. Without treatment, amblyopia typically persists. Treatment in adulthood is usually much less effective.
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Ferri's differential diagnosis: a practical guide to the differential diagnosis of symptoms, signs, and clinical disorders
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Hess RF, Thompson B (February 2013). "New insights into amblyopia: binocular therapy and noninvasive brain stimulation".
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Weakley DR (January 2001). "The association between nonstrabismic anisometropia, amblyopia, and subnormal binocularity".
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as long as vision improves. It is not worthwhile continuing to patch for more than 6 months if no improvement continues.
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Visual Impairments and Developmental Disorders: From diagnosis to rehabilitation Mariani Foundation Paediatric Neurology
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The cause of amblyopia can be any condition that interferes with focusing during early childhood. This can occur from
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Hess RF, Mansouri B, Dakin SC, Allen HA (May 2006). "Integration of local motion is normal in amblyopia".
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Amblyopia is characterized by several functional abnormalities in spatial vision, including reductions in
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Rutstein RF, Corliss D (April 1999). "Relationship between Anisometropia, Amblyopia, and Binocularity".
645: 502:(unequal refractive error between the two eyes). Anisometropia exists when there is a difference in the 370:
and usually have difficulty seeing the three-dimensional images in hidden stereoscopic displays such as
1527:"The effect of font size on reading performance in strabismic amblyopia: an eye movement investigation" 2383:"Can perceptual learning be used to treat amblyopia beyond the critical period of visual development?" 1364:
Mohammadpour, M; Shaabani, A; Sahraian, A; Momenaei, B; Tayebi, F; Bayat, R; Mirshahi, R (June 2019).
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Elflein HM, Fresenius S, Lamparter J, Pitz S, Pfeiffer N, Binder H, Wild P, Mirshahi A (May 2015).
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Antonio-Santos, Aileen; Vedula, S. Swaroop; Hatt, Sarah R.; Powell, Christine (23 March 2020).
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Deprivational: by deprivation of vision early in life by vision-obstructing disorders such as
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Holmes JM, Repka MX, Kraker RT, Clarke MP (March 2006). "The treatment of amblyopia".
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Depending on the chosen criterion for diagnosis, 1–4% of the children have amblyopia.
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Stewart CE, Moseley MJ, Fielder AR (September 2011). "Amblyopia therapy: an update".
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Coats DK and Paysse EA. Overview of amblyopia UpToDate. Last updated: 25 Sep 2014
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is a treatment option, in particular if conventional approaches have failed due to
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A 2009 study, widely reported in the popular press, has suggested that repetitive
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Deprivation amblyopia (amblyopia ex anopsia) results when the ocular media become
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Treatment of individuals age 9 through to adulthood is possible through applied
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Spiegel DP, Li J, Hess RF, Byblow WD, Deng D, Yu M, Thompson B (October 2013).
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Proceedings of the National Academy of Sciences of the United States of America
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chance of achieving 20/20 vision is greater if treatment is initiated early.
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Simons K (2005). "Amblyopia characterization, treatment, and prophylaxis".
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produced in kittens by sufficient visual deprivation during the so-called "
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Levi DM (March 2006). "Visual processing in amblyopia: human studies".
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per line than persons with normal stereo vision, and to have a reduced
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Binocular Vision In, Duane's Foundations of Clinical Ophthalmology
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is recommended for all children around the ages of four to five.
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Jefferis JM, Connor AJ, Clarke MP (November 2015). "Amblyopia".
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in 1981 for their work in showing the extent of the damage to
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of the better eye. Penalization usually consists of applying
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A child wearing an adhesive eyepatch to correct amblyopia
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being irregularly shaped such that focusing is difficult
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In Fazzi E, Bianchi PE (eds.). 1085:may try to pull off eye patches). 782:from the original on 27 July 2016 689:transcranial magnetic stimulation 390:Amblyopia has three main causes: 4141:Central retinal artery occlusion 3066:10.1016/j.preteyeres.2012.11.001 3050:"Amblyopia and binocular vision" 2891:10.1016/j.preteyeres.2012.11.001 2875:"Amblyopia and binocular vision" 2595:10.1016/j.preteyeres.2012.11.001 2579:"Amblyopia and binocular vision" 2399:10.1111/j.1475-1313.2011.00873.x 2169:Amblyopia NEI Health Information 1673:10.1097/00006324-199904000-00026 1504:10.1001/archophthalmol.2012.1481 1370:Journal of Current Ophthalmology 261:than the other (refractive), or 61: 4146:Branch retinal artery occlusion 3875:Terrien's marginal degeneration 1987:. New-York: Springer. pp.  1729:Simon JW, Kaw P (August 2001). 717:compliance with the treatment. 524:or lack of compliance or both. 4176:Bietti's crystalline dystrophy 4136:Central retinal vein occlusion 3865:Pellucid marginal degeneration 2138:10.1002/14651858.CD006460.pub3 1873:10.1002/14651858.CD005136.pub4 1661:Optometry & Vision Science 1267:"Amblyopic reading is crowded" 994:The 5-minute pediatric consult 646:German public health insurance 617:retinal birefringence scanning 447:, so can more easily adapt by 1: 4229:Vitelliform macular dystrophy 4120:Posterior vitreous detachment 3986:Persistent pupillary membrane 3177:Sengpiel F (September 2014). 2971:Nordqvist J (23 April 2013). 1708:10.1016/s0161-6420(00)00425-5 1131:"Online Etymology Dictionary" 366:such as limited stereoscopic 4716:Leber's congenital amaurosis 4627:Internuclear ophthalmoplegia 4318:Vogt-Koyanagi-Harada disease 4303:Persistent fetal vasculature 4234:Leber's congenital amaurosis 3395:National Eye Institute (NEI) 3154:10.3109/09273972.2011.600421 3130:10.1007/978-1-4614-9059-3_10 3095:(Third ed.). Springer. 2710:10.1016/j.jaapos.2012.10.018 2448:10.1097/OPX.0b013e318257a187 2436:Optometry and Vision Science 2351:10.1016/j.visres.2005.07.031 2268:(in German). 28 March 2014. 518:pediatric refractive surgery 512:refractive correction using 3515:Meibomian gland dysfunction 3119:10.1007/978-1-4614-9059-3_8 540:, such as is the case with 5002: 4239:Birdshot chorioretinopathy 4213:Central serous retinopathy 4031:Focal choroidal excavation 3904:Corneal neovascularization 3721:Subconjunctival hemorrhage 2126:Cochrane Database Syst Rev 1786:10.1016/j.jcrs.2007.07.024 1383:10.1016/j.joco.2018.11.005 516:is to be considered. Also 480:pharmacologic penalization 431: 300:, meaning "blunt", and ὀψ 251:poor alignment of the eyes 166:Poor alignment of the eyes 4951: 4938: 4706: 4622:Convergence insufficiency 4495: 4364: 4347: 4334: 4263:Primary juvenile glaucoma 4108:Cytomegalovirus retinitis 3750: 3737: 3523: 3479: 3466: 3457:Diseases of the human eye 3204:10.1016/j.cub.2014.05.063 3012:10.1007/s13311-013-0200-y 2949:10.1016/j.cub.2013.01.059 2844:10.1016/j.brs.2013.04.002 2648:10.1016/j.cub.2008.06.052 2497:10.3238/arztebl.2015.0338 2230:10.1136/bmj.324.7353.1549 2174:11 September 2005 at the 1817:Archives of Ophthalmology 1735:American Family Physician 1630:10.1080/09273970500536227 1492:Archives of Ophthalmology 1461:10.1080/09273970500536243 1036:10.1017/S0952523813000023 1018:Levi DM (November 2013). 532:Deprivation and occlusion 478:over the dominant eye or 321:, and low sensitivity to 48: 39: 4132:Ocular ischemic syndrome 3239:10.3389/fpsyg.2014.00583 2977:Medical News Today (MNT) 2801:10.1177/1545968313491006 905:10.1016/j.bj.2015.06.001 588:ocular dominance columns 255:being irregularly shaped 4632:One and a half syndrome 4386:Foster Kennedy syndrome 3418:College of Optometrists 3405:National Health Service 3226:Frontiers in Psychology 3048:Birch EE (March 2013). 2873:Birch EE (March 2013). 2577:Birch EE (March 2013). 2048:10.1001/jama.2017.11260 1316:Survey of Ophthalmology 1233:10.1073/pnas.0401200101 1182:10.1364/JOSAA.23.000986 772:"Facts About Amblyopia" 656:is unclear as of 2011. 509:primary care physicians 4871:Argyll Robertson pupil 3671:Periorbital cellulitis 3091:Daw, Nigel W. (2014). 1957:. Optometrists Network 1955:"All About Strabismus" 1422:. New York, New York: 1072:National Eye Institute 1068:"Amblyopia (Lazy Eye)" 776:National Eye Institute 727:Functional visual loss 197:Differential diagnosis 4844:Scintillating scotoma 4510:Kearns–Sayre syndrome 4453:Toxic and nutritional 4426:posterior (PION) 3909:Kayser–Fleischer ring 2430:Levi DM (June 2012). 2297:BMJ Clinical Evidence 2099:10.3310/signal-000849 1544:10.1167/iovs.13-13257 610:Stereotests like the 432:Further information: 253:(strabismic), an eye 4617:Conjugate gaze palsy 4488:Paralytic strabismus 4421:anterior (AION) 4203:Retinitis pigmentosa 4198:Macular degeneration 3971:Intermediate uveitis 3887:Keratoconjunctivitis 2546:10.1136/bjo.86.8.915 1953:Cooper J, Cooper R. 1753:on 12 September 2005 1590:10.1167/iovs.09-4236 991:Schwartz MW (2002). 338:contrast sensitivity 263:clouding of the lens 178:clouding of the lens 4922:Childhood blindness 4901:Parinaud's syndrome 4471:Extraocular muscles 4259:Ocular hypertension 4223:Epiretinal membrane 4208:Retinal haemorrhage 4063:Congenital cataract 3195:2014CBio...24.R936S 2940:2013CBio...23.R308L 2640:2008CBio...18.1067T 1224:2004PNAS..101.6692P 1174:2006JOSAA..23..986H 1024:Visual Neuroscience 666:perceptual learning 542:congenital cataract 507:commonly missed by 422:congenital cataract 350:binocular summation 346:stereoscopic acuity 304:, meaning "sight". 4448:Leber's hereditary 4115:Retinal detachment 4068:Childhood cataract 3880:Post-LASIK ectasia 3661:Orbital cellulitis 3610:Lacrimal apparatus 3345:External resources 3093:Visual Development 1979:Wright WK (2006). 893:Biomedical Journal 778:. September 2013. 449:suppressing images 308:Signs and symptoms 4973: 4972: 4969: 4968: 4934: 4933: 4930: 4929: 4876:Marcus Gunn pupil 4852: 4851: 4773:Visual impairment 4640: 4639: 4546: 4545: 4533:Fourth-nerve (IV) 4461: 4460: 4398:Optic disc drusen 4330: 4329: 4326: 4325: 4044: 4043: 3932: 3931: 3838:Corneal dystrophy 3733: 3732: 3729: 3728: 3604: 3603: 3390: 3389: 3189:(18): R936–R940. 3000:Neurotherapeutics 2832:Brain Stimulation 2756:10.1111/opo.12123 2015:978-3-540-32708-0 1918:Journal of Vision 1433:978-0-387-27924-4 1271:Journal of Vision 1112:978-2-7420-1482-8 1004:978-0-7817-3539-1 870:978-0-323-07699-9 859:Ferri FF (2010). 830:10.1136/bmj.h5811 398:(misaligned eyes) 237: 236: 185:Diagnostic method 21:Medical condition 4993: 4940: 4704: 4695:Vision disorders 4654:Refractive error 4596:Brown's syndrome 4552:Other strabismus 4538:Sixth-nerve (VI) 4528:Oculomotor (III) 4500:Ophthalmoparesis 4493: 4484: 4475:Binocular vision 4408:Optic neuropathy 4374:optic papillitis 4362: 4349: 4336: 4225:(Macular pucker) 3943: 3924:Band keratopathy 3761: 3752: 3739: 3666:Orbital lymphoma 3553:Blepharophimosis 3543:Blepharochalasis 3490: 3481: 3468: 3447: 3440: 3433: 3424: 3272: 3261: 3251: 3241: 3216: 3206: 3173: 3106: 3087: 3077: 3034: 3033: 3023: 2991: 2985: 2984: 2979:. Archived from 2968: 2962: 2961: 2951: 2919: 2913: 2912: 2902: 2870: 2864: 2863: 2827: 2821: 2820: 2783: 2777: 2776: 2758: 2740: 2731: 2722: 2721: 2698:Journal of AAPOS 2693: 2687: 2686: 2674: 2668: 2667: 2623: 2617: 2616: 2606: 2574: 2568: 2567: 2557: 2525: 2519: 2518: 2508: 2476: 2470: 2469: 2459: 2427: 2421: 2420: 2410: 2378: 2372: 2371: 2353: 2329: 2323: 2322: 2312: 2288: 2282: 2281: 2279: 2277: 2266:aerztezeitung.de 2258: 2252: 2251: 2241: 2209: 2203: 2202: 2184: 2178: 2166: 2160: 2159: 2149: 2117: 2111: 2110: 2083: 2077: 2074: 2068: 2067: 2030: 2024: 2023: 1999: 1993: 1992: 1986: 1976: 1967: 1966: 1964: 1962: 1950: 1944: 1943: 1933: 1909: 1903: 1902: 1892: 1852: 1841: 1840: 1812: 1806: 1805: 1769: 1763: 1762: 1760: 1758: 1749:. Archived from 1726: 1720: 1719: 1691: 1685: 1684: 1656: 1650: 1649: 1613: 1602: 1601: 1573: 1567: 1566: 1556: 1546: 1522: 1516: 1515: 1487: 1481: 1480: 1444: 1438: 1437: 1415: 1406: 1405: 1395: 1385: 1361: 1355: 1354: 1346: 1340: 1339: 1311: 1305: 1304: 1286: 1262: 1256: 1255: 1245: 1235: 1203: 1194: 1193: 1157: 1151: 1150: 1148: 1146: 1127: 1121: 1120: 1094: 1088: 1087: 1081: 1079: 1064: 1058: 1057: 1047: 1015: 1009: 1008: 988: 979: 978: 960: 936: 927: 926: 916: 884: 875: 874: 856: 850: 849: 813: 792: 791: 789: 787: 768: 696:and theta burst 382:remains normal. 368:depth perception 364:binocular vision 148:Decreased vision 114: 110: 105: 104: 101: 100: 97: 94: 91: 88: 85: 82: 79: 76: 73: 70: 67: 44: 24: 5001: 5000: 4996: 4995: 4994: 4992: 4991: 4990: 4976: 4975: 4974: 4965: 4947: 4926: 4905: 4848: 4817: 4777: 4731:Color blindness 4697: 4689: 4636: 4610:Other binocular 4605: 4542: 4514: 4477: 4473: 4469: 4457: 4402: 4355: 4343: 4322: 4278:Ocular hypotony 4243: 4103:Chorioretinitis 4084: 4040: 4024:Chorioretinitis 4000: 3981:Rubeosis iridis 3959: 3928: 3899:Corneal opacity 3855:Corneal ectasia 3782: 3746: 3725: 3711:Pseudopterygium 3675: 3637: 3600: 3567: 3563:Ankyloblepharon 3519: 3475: 3462: 3461: 3451: 3391: 3386: 3385: 3340: 3339: 3283: 3269: 3264: 3219: 3183:Current Biology 3176: 3139: 3103: 3090: 3047: 3043: 3041:Further reading 3038: 3037: 2993: 2992: 2988: 2983:on 29 May 2013. 2970: 2969: 2965: 2928:Current Biology 2921: 2920: 2916: 2872: 2871: 2867: 2829: 2828: 2824: 2785: 2784: 2780: 2738: 2733: 2732: 2725: 2695: 2694: 2690: 2676: 2675: 2671: 2634:(14): 1067–71. 2628:Current Biology 2625: 2624: 2620: 2576: 2575: 2571: 2527: 2526: 2522: 2478: 2477: 2473: 2429: 2428: 2424: 2380: 2379: 2375: 2338:Vision Research 2331: 2330: 2326: 2290: 2289: 2285: 2275: 2273: 2260: 2259: 2255: 2211: 2210: 2206: 2199: 2186: 2185: 2181: 2176:Wayback Machine 2167: 2163: 2132:(8): CD006460. 2119: 2118: 2114: 2085: 2084: 2080: 2075: 2071: 2032: 2031: 2027: 2016: 2001: 2000: 1996: 1978: 1977: 1970: 1960: 1958: 1952: 1951: 1947: 1911: 1910: 1906: 1867:(3): CD005136. 1854: 1853: 1844: 1814: 1813: 1809: 1780:(12): 2028–34. 1771: 1770: 1766: 1756: 1754: 1728: 1727: 1723: 1693: 1692: 1688: 1658: 1657: 1653: 1615: 1614: 1605: 1575: 1574: 1570: 1524: 1523: 1519: 1489: 1488: 1484: 1446: 1445: 1441: 1434: 1417: 1416: 1409: 1363: 1362: 1358: 1348: 1347: 1343: 1313: 1312: 1308: 1264: 1263: 1259: 1205: 1204: 1197: 1159: 1158: 1154: 1144: 1142: 1129: 1128: 1124: 1113: 1096: 1095: 1091: 1077: 1075: 1066: 1065: 1061: 1030:(5–6): 277–87. 1017: 1016: 1012: 1005: 990: 989: 982: 938: 937: 930: 886: 885: 878: 871: 858: 857: 853: 815: 814: 795: 785: 783: 770: 769: 740: 735: 723: 685: 674: 662: 626: 612:Lang stereotest 600: 592:critical period 571: 569:Pathophysiology 534: 496: 436: 430: 407:nearsightedness 401:Refractive: by 394:Strabismic: by 388: 380:motion parallax 372:autostereograms 348:) and abnormal 310: 157:Before age five 121: 112: 108: 64: 60: 22: 17: 12: 11: 5: 4999: 4997: 4989: 4988: 4978: 4977: 4971: 4970: 4967: 4966: 4964: 4963: 4961:Onchocerciasis 4958: 4952: 4949: 4948: 4943: 4936: 4935: 4932: 4931: 4928: 4927: 4925: 4924: 4919: 4913: 4911: 4907: 4906: 4904: 4903: 4898: 4893: 4888: 4883: 4878: 4873: 4868: 4862: 4860: 4854: 4853: 4850: 4849: 4847: 4846: 4841: 4836: 4831: 4825: 4823: 4819: 4818: 4816: 4815: 4813:Quadrantanopia 4810: 4809: 4808: 4803: 4798: 4787: 4785: 4779: 4778: 4776: 4775: 4762: 4761: 4760: 4758:Oguchi disease 4750: 4749: 4748: 4743: 4738: 4728: 4723: 4718: 4713: 4707: 4701: 4691: 4690: 4688: 4687: 4682: 4673: 4668: 4667: 4666: 4661: 4650: 4648: 4642: 4641: 4638: 4637: 4635: 4634: 4629: 4624: 4619: 4613: 4611: 4607: 4606: 4604: 4603: 4601:Duane syndrome 4598: 4593: 4588: 4587: 4586: 4581: 4571: 4566: 4556: 4554: 4548: 4547: 4544: 4543: 4541: 4540: 4535: 4530: 4524: 4522: 4516: 4515: 4513: 4512: 4507: 4502: 4496: 4490: 4481: 4463: 4462: 4459: 4458: 4456: 4455: 4450: 4445: 4440: 4439: 4438: 4433: 4428: 4423: 4412: 4410: 4404: 4403: 4401: 4400: 4395: 4390: 4389: 4388: 4378: 4377: 4376: 4369:Optic neuritis 4365: 4359: 4345: 4344: 4339: 4332: 4331: 4328: 4327: 4324: 4323: 4321: 4320: 4315: 4310: 4305: 4300: 4298:Phthisis bulbi 4295: 4290: 4285: 4280: 4275: 4270: 4265: 4251: 4249: 4245: 4244: 4242: 4241: 4236: 4231: 4226: 4220: 4215: 4210: 4205: 4200: 4195: 4194: 4193: 4188: 4183: 4181:Coats' disease 4178: 4173: 4171:of prematurity 4168: 4163: 4158: 4148: 4143: 4138: 4129: 4124: 4123: 4122: 4112: 4111: 4110: 4105: 4094: 4092: 4086: 4085: 4083: 4082: 4080:Ectopia lentis 4077: 4072: 4071: 4070: 4065: 4054: 4052: 4046: 4045: 4042: 4041: 4039: 4038: 4033: 4028: 4027: 4026: 4016: 4010: 4008: 4002: 4001: 3999: 3998: 3993: 3988: 3983: 3978: 3973: 3968: 3962: 3960: 3958: 3957: 3952: 3946: 3940: 3938:Vascular tunic 3934: 3933: 3930: 3929: 3927: 3926: 3921: 3916: 3911: 3906: 3901: 3896: 3895: 3894: 3884: 3883: 3882: 3877: 3872: 3867: 3862: 3852: 3851: 3850: 3845: 3835: 3830: 3825: 3824: 3823: 3821:Photokeratitis 3818: 3813: 3808: 3803: 3792: 3790: 3784: 3783: 3781: 3780: 3775: 3769: 3767: 3758: 3748: 3747: 3742: 3735: 3734: 3731: 3730: 3727: 3726: 3724: 3723: 3718: 3713: 3708: 3703: 3702: 3701: 3694:Conjunctivitis 3691: 3685: 3683: 3677: 3676: 3674: 3673: 3668: 3663: 3658: 3653: 3647: 3645: 3639: 3638: 3636: 3635: 3630: 3628:Dacryocystitis 3625: 3620: 3618:Dacryoadenitis 3614: 3612: 3606: 3605: 3602: 3601: 3599: 3598: 3593: 3588: 3583: 3577: 3575: 3569: 3568: 3566: 3565: 3560: 3555: 3550: 3545: 3540: 3535: 3530: 3524: 3521: 3520: 3518: 3517: 3512: 3507: 3502: 3496: 3494: 3487: 3477: 3476: 3471: 3464: 3463: 3460: 3459: 3453: 3452: 3450: 3449: 3442: 3435: 3427: 3421: 3420: 3411: 3398: 3397:Resource Guide 3388: 3387: 3384: 3383: 3372: 3361: 3349: 3348: 3346: 3342: 3341: 3338: 3337: 3326: 3315: 3300: 3284: 3279: 3278: 3276: 3275:Classification 3268: 3267:External links 3265: 3263: 3262: 3217: 3174: 3136: 3135: 3134: 3133: 3122: 3108: 3107: 3102:978-1461490586 3101: 3088: 3044: 3042: 3039: 3036: 3035: 2986: 2963: 2914: 2865: 2822: 2778: 2723: 2688: 2669: 2618: 2569: 2520: 2491:(19): 338–44. 2471: 2422: 2373: 2324: 2283: 2253: 2224:(7353): 1549. 2204: 2198:978-0071634205 2197: 2179: 2161: 2112: 2078: 2069: 2042:(9): 836–844. 2025: 2014: 1994: 1968: 1945: 1924:(5): 380–405. 1904: 1842: 1823:(12): 2137–9. 1807: 1764: 1721: 1686: 1651: 1603: 1568: 1517: 1482: 1439: 1432: 1407: 1376:(2): 118–126. 1356: 1341: 1306: 1284:10.1167/7.2.21 1277:(2): 21.1–17. 1257: 1218:(17): 6692–7. 1195: 1152: 1135:etymonline.com 1122: 1111: 1089: 1059: 1010: 1003: 980: 928: 876: 869: 851: 793: 737: 736: 734: 731: 730: 729: 722: 719: 684: 681: 673: 670: 661: 658: 654:vision therapy 625: 622: 599: 596: 580:Torsten Wiesel 576:David H. Hubel 570: 567: 533: 530: 514:contact lenses 495: 492: 429: 426: 425: 424: 418: 411:farsightedness 399: 387: 384: 342:vernier acuity 340:function, and 309: 306: 267:vision testing 242:, also called 235: 234: 231: 227: 226: 217: 213: 212: 199: 193: 192: 190:Vision testing 187: 181: 180: 163: 159: 158: 155: 151: 150: 145: 139: 138: 129: 123: 122: 120: 119: 57: 55: 51: 50: 46: 45: 37: 36: 33: 29: 28: 20: 15: 13: 10: 9: 6: 4: 3: 2: 4998: 4987: 4984: 4983: 4981: 4962: 4959: 4957: 4954: 4953: 4950: 4946: 4941: 4937: 4923: 4920: 4918: 4915: 4914: 4912: 4908: 4902: 4899: 4897: 4894: 4892: 4889: 4887: 4884: 4882: 4881:Adie syndrome 4879: 4877: 4874: 4872: 4869: 4867: 4864: 4863: 4861: 4859: 4855: 4845: 4842: 4840: 4837: 4835: 4832: 4830: 4827: 4826: 4824: 4820: 4814: 4811: 4807: 4804: 4802: 4799: 4797: 4794: 4793: 4792: 4789: 4788: 4786: 4784: 4780: 4774: 4770: 4766: 4763: 4759: 4756: 4755: 4754: 4751: 4747: 4744: 4742: 4739: 4737: 4736:Achromatopsia 4734: 4733: 4732: 4729: 4727: 4724: 4722: 4719: 4717: 4714: 4712: 4709: 4708: 4705: 4702: 4700: 4696: 4692: 4686: 4683: 4681: 4677: 4676:Anisometropia 4674: 4672: 4669: 4665: 4662: 4660: 4657: 4656: 4655: 4652: 4651: 4649: 4647: 4643: 4633: 4630: 4628: 4625: 4623: 4620: 4618: 4615: 4614: 4612: 4608: 4602: 4599: 4597: 4594: 4592: 4589: 4585: 4582: 4580: 4577: 4576: 4575: 4572: 4570: 4567: 4565: 4561: 4558: 4557: 4555: 4553: 4549: 4539: 4536: 4534: 4531: 4529: 4526: 4525: 4523: 4521: 4517: 4511: 4508: 4506: 4503: 4501: 4498: 4497: 4494: 4491: 4489: 4485: 4482: 4480: 4479:Accommodation 4476: 4472: 4468: 4464: 4454: 4451: 4449: 4446: 4444: 4441: 4437: 4434: 4432: 4429: 4427: 4424: 4422: 4419: 4418: 4417: 4414: 4413: 4411: 4409: 4405: 4399: 4396: 4394: 4393:Optic atrophy 4391: 4387: 4384: 4383: 4382: 4379: 4375: 4372: 4371: 4370: 4367: 4366: 4363: 4360: 4358: 4354: 4350: 4346: 4342: 4337: 4333: 4319: 4316: 4314: 4311: 4309: 4306: 4304: 4301: 4299: 4296: 4294: 4293:Keratomycosis 4291: 4289: 4288:Globe rupture 4286: 4284: 4281: 4279: 4276: 4274: 4271: 4269: 4266: 4264: 4260: 4256: 4253: 4252: 4250: 4246: 4240: 4237: 4235: 4232: 4230: 4227: 4224: 4221: 4219: 4218:Macular edema 4216: 4214: 4211: 4209: 4206: 4204: 4201: 4199: 4196: 4192: 4189: 4187: 4184: 4182: 4179: 4177: 4174: 4172: 4169: 4167: 4164: 4162: 4159: 4157: 4154: 4153: 4152: 4149: 4147: 4144: 4142: 4139: 4137: 4133: 4130: 4128: 4127:Retinoschisis 4125: 4121: 4118: 4117: 4116: 4113: 4109: 4106: 4104: 4101: 4100: 4099: 4096: 4095: 4093: 4091: 4087: 4081: 4078: 4076: 4073: 4069: 4066: 4064: 4061: 4060: 4059: 4056: 4055: 4053: 4051: 4047: 4037: 4034: 4032: 4029: 4025: 4022: 4021: 4020: 4017: 4015: 4014:Choroideremia 4012: 4011: 4009: 4007: 4003: 3997: 3994: 3992: 3991:Iridodialysis 3989: 3987: 3984: 3982: 3979: 3977: 3974: 3972: 3969: 3967: 3964: 3963: 3961: 3956: 3953: 3951: 3948: 3947: 3944: 3941: 3939: 3935: 3925: 3922: 3920: 3919:Arcus senilis 3917: 3915: 3914:Haab's striae 3912: 3910: 3907: 3905: 3902: 3900: 3897: 3893: 3890: 3889: 3888: 3885: 3881: 3878: 3876: 3873: 3871: 3868: 3866: 3863: 3861: 3858: 3857: 3856: 3853: 3849: 3846: 3844: 3841: 3840: 3839: 3836: 3834: 3831: 3829: 3828:Corneal ulcer 3826: 3822: 3819: 3817: 3814: 3812: 3809: 3807: 3806:acanthamoebic 3804: 3802: 3799: 3798: 3797: 3794: 3793: 3791: 3789: 3785: 3779: 3776: 3774: 3771: 3770: 3768: 3766: 3762: 3759: 3757: 3756:Fibrous tunic 3753: 3749: 3745: 3740: 3736: 3722: 3719: 3717: 3714: 3712: 3709: 3707: 3704: 3700: 3697: 3696: 3695: 3692: 3690: 3687: 3686: 3684: 3682: 3678: 3672: 3669: 3667: 3664: 3662: 3659: 3657: 3654: 3652: 3649: 3648: 3646: 3644: 3640: 3634: 3633:Xerophthalmia 3631: 3629: 3626: 3624: 3621: 3619: 3616: 3615: 3613: 3611: 3607: 3597: 3594: 3592: 3589: 3587: 3584: 3582: 3579: 3578: 3576: 3574: 3570: 3564: 3561: 3559: 3556: 3554: 3551: 3549: 3546: 3544: 3541: 3539: 3538:Lagophthalmos 3536: 3534: 3531: 3529: 3526: 3525: 3522: 3516: 3513: 3511: 3508: 3506: 3503: 3501: 3498: 3497: 3495: 3491: 3488: 3486: 3482: 3478: 3474: 3469: 3465: 3458: 3455: 3454: 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132:Ophthalmology 130: 128: 124: 117: 116: 103: 59: 58: 56: 54:Pronunciation 52: 47: 43: 38: 34: 30: 25: 19: 4771: / 4767: / 4746:Monochromacy 4710: 4678: / 4574:Heterophoria 4562: / 4261: / 4257: / 4161:hypertensive 4134: / 3955:Ciliary body 3870:Keratoglobus 3778:Episcleritis 3656:Enophthalmos 3651:Exophthalmos 3596:Trichomegaly 3591:Distichiasis 3493:Inflammation 3374: 3363: 3352: 3328: 3317: 3302: 3287: 3229: 3225: 3186: 3182: 3145: 3141: 3092: 3057: 3053: 3006:(4): 831–9. 3003: 2999: 2989: 2981:the original 2976: 2966: 2931: 2927: 2917: 2882: 2878: 2868: 2838:(6): 860–7. 2835: 2831: 2825: 2795:(8): 760–9. 2792: 2788: 2781: 2746: 2742: 2704:(1): 89–93. 2701: 2697: 2691: 2677:Seabrook A. 2672: 2631: 2627: 2621: 2586: 2582: 2572: 2540:(8): 915–9. 2537: 2533: 2523: 2488: 2484: 2474: 2439: 2435: 2425: 2390: 2386: 2376: 2341: 2337: 2327: 2300: 2296: 2286: 2274:. 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Index


/ˌæmbliˈoʊpi.Ι™/
AM-blee-OH-pee-Ι™
Specialty
Ophthalmology
optometry
Symptoms
Decreased vision
Poor alignment of the eyes
being irregularly shaped such that focusing is difficult
being more nearsighted or farsighted
clouding of the lens
Diagnostic method
Vision testing
Differential diagnosis
Brainstem
optic nerve
eye diseases
Glasses
eyepatch
poor alignment of the eyes
being irregularly shaped
being more nearsighted or farsighted
clouding of the lens
vision testing
Glasses
patch
atropine
Greek
stereo vision

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