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Causes
By Mayo Clinic staffConvergence insufficiency results from misalignment of the eyes when focusing on nearby objects. The exact cause isn't known, but the misalignment involves the muscles that move the eye. Typically, one eye drifts outward when you're focusing on a word or object at close range.
References
- Lavrich JB. Convergence insufficiency and its current treatment. Current Opinion in Ophthalmology. 2010;21:356.
- Scheiman M, et al. Non-surgical interventions for convergence insufficiency. Cochrane Database of Systematic Reviews. 2011;(3)CD006768. http://www2.cochrane.org/reviews. Accessed May 27, 2011.
- Convergence insufficiency. American Association for Pediatric Ophthalmology and Strabismus. http://www.aapos.org/terms/show/38. Accessed May 27, 2011.
- Serna A, et al. Treatment of symptomatic convergence insufficiency with a home-based computer orthoptic exercise program. Journal of the American Association for Pediatric Ophthalmology and Strabismus. 2011;15:140.
- Convergence Insufficiency Treatment Trial Study Group. Randomized clinical trial of treatments for symptomatic convergence insufficiency in children. Archives of Ophthalmology. 2008;126:1336.
- Scheiman M, et al. Treatment of convergence insufficiency in childhood: A current perspective. Optometry and Vision Science. 2009;86:420.
- Scheiman M, et al. Vision therapy/orthoptics for symptomatic convergence insufficiency in children: Treatment kinetics. Optometry and Vision Science. 2010;87:593.
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