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Convergence Insufficiency. Other names. Convergence disorder. Specialty. Ophthalmology, optometry. Convergence insufficiency is a sensory and neuromuscular anomaly of the binocular vision system, characterized by a reduced ability of the eyes to turn towards each other, or sustain convergence .
Binocular Vision Disorders: These are issues with how the eyes work together, such as strabismus (eye misalignment) or convergence insufficiency (difficulty bringing the eyes together to focus on near objects).
In optometry, convergence is the simultaneous inward movement of both eyes toward each other, usually in an effort to maintain single binocular vision when viewing an object. [6] This is the only eye movement that is not conjugate, but instead adducts the eye. [7]
Cotter is a professor at Marshall B. Ketchum University [1] and is a vice-chair at both the Pediatric Eye Disease Investigator Group, a division of National Eye Institute, and the Convergence Insufficiency Treatment Trial. She also serves on the National Expert Panel of the American Optometric Association.
A common form of exotropia is known as "convergence insufficiency" that responds well to orthoptic vision therapy including exercises. This disorder is characterized by an inability of the eyes to work together when used for near viewing, such as reading.
Convergence insufficiency. Accommodative insufficiency ( AI) involves the inability of the eye to focus properly on an object. Accommodation is the adjustment of the curvature of the lens to focus on objects near and far.
Binasal occlusion is used in treatment of patients with sensory deficits due to complications of traumatic brain injury or having had a stroke, as well as patients with diplopia, esotropia, convergence excess, divergence insufficiency, or visual overstimulation.
Positive relative accommodation ( PRA) in biology, is a measure of the maximum ability to stimulate eye accommodation while maintaining clear, single binocular vision. [1] This measurement is typically obtained by an orthoptist, ophthalmologist or optometrist during an eye examination using a phoropter. After the patient's distance correction ...
Suppression of an eye is a subconscious adaptation by a person's brain to eliminate the symptoms of disorders of binocular vision such as strabismus, convergence insufficiency and aniseikonia. The brain can eliminate double vision by ignoring all or part of the image of one of the eyes.
The amplitude of accommodation is the maximum potential increase in optical power that an eye can achieve in adjusting its focus. It refers to a certain range of object distances for which the retinal image is as sharply focussed as possible.