Convergence 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 nearby word or object.
June 20, 2014
- Convergence insufficiency. American Association for Pediatric Ophthalmology and Strabismus. http://www.aapos.org/terms/show/38. Accessed Feb. 7, 2014.
- Scheiman M, et al. Non-surgical interventions for convergence insufficiency. Cochrane Database of Systematic Reviews. http://onlinelibrary.wiley.com/doi/10.1002/14651858.CD006768.pub2/abstract. Accessed Feb. 7, 2014.
- Borsting E, et al. Improvement in academic behaviors after successful treatment of convergence insufficiency. Optometry and Vision Science. 2012;89:12.
- Westman M, et al. Relief of asthenopic symptoms with orthoptic exercises in convergence insufficiency is achieved in both adults and children. Journal of Optometry. 2012;5:62.