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21:57 Aug 24, 2008
English to Arabic translations [PRO] Medical (general)
English term or phrase:convergence of vision
what makes your eyes concentrate on one thing like when reading.
However, according to childhood educator Glenn Doman, a pioneer in the field of right-brain training, crawling forwards is an essential skill to master. Doman claims that crawling stimulates the brain to develop convergence of vision – and that as a result, children who skipped this phase as babies may find it difficult to learn to read and write. In addition, children who missed out on crawling may suffer from speech problems, he says – because the same part of the brain (the midbrain) controls both functions.
Reference information: Convergence- the ability to use both eyes as a team and to be able to turn the eyes inward to maintain single vision up close.
Convergence Excess (CE)- a clinical condition in which the eyes have a tendency to turn excessively inward when viewing an object at a near distance. Symptoms may include visual fatigue while reading or using a computer, occasional blurred or double vision, and inability to comprehend or concentrate while reading. Clinical signs include: greater esophoria at near than distance, high AC/A ratio, and a high lag of accommodation. Can be improved with vision therapy and/or glasses. (See "Esophoria")
Convergence Insufficiency (CI)- (clinical condition) the inability of the eyes to turn inward and/or sustain an inward turn. Symptoms include eye strain with reading and using a computer, headaches, loss of comprehension, difficulty concentrating, blurred or double vision, and eye fatigue. Clinical signs include: near point of convergence of greater than 4 inches (10 cm), greater exophoria at near than at distance, and low AC/A ratio. Vision therapy is an effective treatment option. For more information, please click here. To review the American Optometric Association's guidelines for convergence insufficiency, please click here. (See "Exophoria")