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  2. Convergence insufficiency - Wikipedia

    en.wikipedia.org/wiki/Convergence_insufficiency

    The first, published in Archives of Ophthalmology, demonstrated that computer exercises when combined with office/based vision therapy/orthoptics were more effective than "pencil pushups" or computer exercises alone for convergency insufficiency in nine- to eighteen-year-old children.

  3. Orthoptics - Wikipedia

    en.wikipedia.org/wiki/Orthoptics

    For children, there is evidence that orthoptics is more effective at treating convergence insufficiency than home-based pencil or computer training; for adults the effectiveness is less evident. History. Orthoptics has a long history in supporting ophthalmic care.

  4. Vision therapy - Wikipedia

    en.wikipedia.org/wiki/Vision_therapy

    Some of the exercises use: [citation needed] Marsden balls; Rotation trainers; Syntonics; Balance board or beams; Saccadic fixators; Directional sequencers; Fusional amplitude and relative fusional amplitude training are designed to alleviate convergence insufficiency. The CITT study (Convergence Insufficiency Treatment Trial) was a randomized ...

  5. Stereopsis recovery - Wikipedia

    en.wikipedia.org/wiki/Stereopsis_recovery

    Orthoptic exercises have proven to be effective for reducing symptoms in patients with convergence insufficiency and decompensating exophoria by improving the near-point convergence of the eyes that is necessary for binocular fusion.

  6. Prism fusion range - Wikipedia

    en.wikipedia.org/wiki/Prism_fusion_range

    Convergence insufficiency - usually associated with accommodative difficulties, the fusional convergence range of these patients is reduced. Divergence insufficiency- although rare and usually associated with a neurological condition, the PFR is able to detect a reduced divergence range.

  7. Accommodative insufficiency - Wikipedia

    en.wikipedia.org/wiki/Accommodative_insufficiency

    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.

  8. Brock string - Wikipedia

    en.wikipedia.org/wiki/Brock_string

    The Brock string is commonly employed during treatment of convergence insufficiency and other anomalies of binocular vision. It is used to develop skills of convergence as well as to disrupt suppression of one of the eyes.

  9. Exophoria - Wikipedia

    en.wikipedia.org/wiki/Exophoria

    Convergence insufficiency – near exodeviation greater than distance deviation. These can be due to nerve, muscle, or congenital problems, or due to mechanical anomalies. Unlike exotropia, fusion is possible in this condition, causing diplopia to be uncommon.

  10. Convergence tests - Wikipedia

    en.wikipedia.org/wiki/Convergence_tests

    In mathematics, convergence tests are methods of testing for the convergence, conditional convergence, absolute convergence, interval of convergence or divergence of an infinite series =.

  11. Stereoscopic acuity - Wikipedia

    en.wikipedia.org/wiki/Stereoscopic_acuity

    A second peg, below it, can be moved back and forth until it is just detectably nearer than the fixed one. Stereoacuity is defined as the minimum angle detectable, calculated as the difference between the angles subtended by both positions, A and B. Stereoacuity is possible due to binocular disparity, i.e., the difference in their binocular ...