Description
Deficiencies in binocular vision can result in a myriad of problems for a patient, including headaches, diplopia, asthenopia, and blurred vision, just to name a few. Convergence excess is one of the most prevalent vision disorders, yet there are many theories on diagnosing it. The author theorized that by measuring the base-in (BI) vergences at near and dividing the value by the results of the kinetic cover test, the clinician would come up with a number, a convergence excess (CE) factor, which would help determine whether or not someone is suffering from convergence excess. Forty-one individuals from the Michigan College of Optometry and a private practice in Michigan served as subjects for the study. In patients that report significant symptomology, 89% showed a CE factor of less than or equal to eight, whereas those with minimal symptomology showed a CE factor of greater than eight 71% of the time.
