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Convergence insufficiency. 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 .
Fixation disparity. Fixation disparity is a tendency of the eyes to drift in the direction of the heterophoria. While the heterophoria refers to a fusion-free vergence state, the fixation disparity refers to a small misalignment of the visual axes when both eyes are open in an observer with normal fusion and binocular vision. [1]
Prism fusion range. The prism fusion range ( PFR) or fusional vergence amplitude is a clinical eye test performed by orthoptists, optometrists, and ophthalmologists to assess motor fusion, specifically the extent to which a patient can maintain binocular single vision ( BSV) in the presence of increasing vergence demands. Motor fusion is ...
Orthoptics is a profession allied to the eye care profession. Orthoptists are the experts in diagnosing and treating defects in eye movements and problems with how the eyes work together, called binocular vision. These can be caused by issues with the muscles around the eyes or defects in the nerves enabling the brain to communicate with the eyes.
Here are three no-brainer AI stocks to buy right now. A man sitting at a computer with a graphic depicting various AI applications overlaid. Image source: Getty Images. 1. Adobe. Adobe (NASDAQ ...
June 12, 2024 at 10:38 PM. SYDNEY (Reuters) - The Australian government should be required to disclose every consulting contract worth over A$2 million ($1.33 million) and contracts should include ...
Cristopher Sánchez pitched a shutout, Bryson Stott drove in both runs and the Philadelphia Phillies beat the Miami Marlins 2-0 on Friday night in the first contest without Bryce Harper and Kyle ...
Lancaster red-green test. Purpose. measures strabismus. In the fields of optometry and ophthalmology, the Lancaster red-green test is a binocular, dissociative, subjective cover test that measures strabismus in the nine diagnostic positions of gaze. The test is named after Walter Brackett Lancaster, who introduced it in 1939.