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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.
- Convergence insufficiency. American Association for Pediatric Ophthalmology and Strabismus. http://www.aapos.org/displaycommon.cfm?an=1&subarticlenbr=76. Accessed June 12, 2009.
- Wallace DK. Treatment options for symptomatic convergence insufficiency. Archives of Ophthalmology. 2008;126:1455.
- Convergence Insufficiency Treatment Trial Study Group. Randomized clinical trial of treatments for symptomatic convergence insufficiency in children. Archives of Ophthalmology. 2008;126:1336.
- More effective treatment identified for common childhood vision disorder. National Eye Institute. http://www.nei.nih.gov/news/pressreleases/101308.asp.
- Scheiman M, et al. Treatment of convergence insufficiency in childhood: A current perspective. Optometry and Vision Science. 2009;86:420.
- Maples WS, et al. Near point of convergence norms measured in elementary school children. Optometry and Vision Science. 2007;84:224.
- Robertson DM (expert opinion). Mayo Clinic, Rochester, Minn. July 9, 2009.
