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- Anisometropic amblyopia—Vision in one eye differs from the other. This is often caused by a large difference in eyeglass prescription. The difference may be caused by 1 eye being more nearsighted or farsighted than the other, or by large differences in astigmatism.
- Strabismic amblyopia— Visible misalignment (crossing) of one eye.
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- Crossed eyes
A large difference in sight between the 2 eyes that may be:
- Detected by a large difference in eyeglass prescription
- Visual blockage such as a cataract, droopy eyelid, or corneal scarring
- A droopy (the inability to fully-open) eyelid that blocks the pupil
- Blurry vision
- Excessive squinting or closing of the eyes
- Repeatedly closing of one eye in bright sunlight
- Crossing of one eye, generally the eye that is less used will excessively turn toward the nose
- Visual acuity assessment testing (VAT)—to assess distant vision
- Cycloplegic refraction test—to assess how the eyeball displays and receives images produced by the lens of the eye
- Retinoscopy—to determine a preverbal child’s eyeglass prescription
- Prisms—to determine the amount of crossing between the 2 eyes
Eye Smart—American Ophthalmology http://www.geteyesmart.org
National Eye Institute (NEI) http://www.nei.nih.gov
Canadian Ophthalmological Society http://www.cos-sco.ca
The Canadian National Institute for the Blind http://www.cnib.ca
Amblyopia. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed. Updated August 13, 2012. Accessed June 30, 2013.
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Flynn JT, Schiffman J, et al. The therapy of amblyopia: An analysis of the results of amblyopia therapy utilizing the pooled data of published studies. Trans Am Ophthalmol Soc. 1998;96: 431-450; discussion 450-453.
Holmes JM, Beck RW, et al. Pediatric Eye Disease Investigator Group. Impact of patching and atropine treatment on the child and family in the amblyopia treatment study. Arch Ophthalmol. 2003;121(11):1625-1632.
Kushner BJ. Atropine vs. patching for the treatment of moderate amblyopia in children. Arch Ophthalmol. 2002;120(3):387-388.
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5/28/2010 DynaMed's Systematic Literature Surveillance http://www.ebscohost.com/dynamed: Pediatric Eye Disease Investigator Group Writing Committee, Rutstein RP, Quinn GE, et al. A randomized trial comparing Bangerter filters and patching for the treatment of moderate amblyopia in children. Ophthalmology. 2010;117(5):998-1004.
2/4/2011 DynaMed's Systematic Literature Surveillance http://www.ebscohost.com/dynamed: US Preventive Services Task Force. Vision screening for children 1 to 5 years of age: US Preventive Services Task Force recommendation statement. Pediatrics. 2011;127(2):340-346.
- Reviewer: Michael Woods, MD
- Review Date: 10/2014
- Update Date: 06/30/2013