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  2. Vergence - Wikipedia

    en.wikipedia.org/wiki/Vergence

    Right eye diverging while left eye remains relatively stable – an example of partial divergence. In ophthalmology, divergence is the simultaneous outward movement of both eyes away from each other, usually in an effort to maintain single binocular vision when viewing an object. It is a type of vergence eye movement.

  3. Exotropia - Wikipedia

    en.wikipedia.org/wiki/Exotropia

    A comprehensive eye examination including an ocular motility (i.e., eye movement) evaluation and an evaluation of the internal ocular structures allows an eye doctor to accurately diagnose exotropia. Although glasses and/or patching therapy, exercises, or prisms may reduce or help control the outward-turning eye in some children, surgery is ...

  4. Prism fusion range - Wikipedia

    en.wikipedia.org/wiki/Prism_fusion_range

    Divergence insufficiency- although rare and usually associated with a neurological condition, the PFR is able to detect a reduced divergence range. Divergence excess - when divergence occurs in excess, therefore the eyes demonstrate a reduced ability to converge. Usually occurs with an exo-deviation. [2]

  5. Dissociated vertical deviation - Wikipedia

    en.wikipedia.org/wiki/Dissociated_vertical_deviation

    Usually both eyes work together as described by Hering's and Sherrington's laws of innervation. A DVD is a slow upward and sometimes temporal movement of one eye, with cortical suppression of the vision in that eye while it is deviated. On returning downward and possibly inward to take up fixation, the DVD slow movement will be reversed.

  6. Divergence - Wikipedia

    en.wikipedia.org/wiki/Divergence

    In vector calculus, divergence is a vector operator that operates on a vector field, producing a scalar field giving the quantity of the vector field's source at each point. More technically, the divergence represents the volume density of the outward flux of a vector field from an infinitesimal volume around a given point.

  7. Accommodation reflex - Wikipedia

    en.wikipedia.org/wiki/Accommodation_reflex

    Light from a single point of a distant object and light from a single point of a near object being brought to a focus. The accommodation reflex (or accommodation-convergence reflex) is a reflex action of the eye, in response to focusing on a near object, then looking at a distant object (and vice versa), comprising coordinated changes in vergence, lens shape (accommodation) and pupil size.

  8. What Is Coloboma? All About Madeleine McCann’s Rare Eye Condition

    www.aol.com/coloboma-madeleine-mccann-rare-eye...

    The eye develops in utero during the first three months of pregnancy, and a gap called the choroidal fissure appears at the bottom of the stalks that eventually form the eye, the AAO explains.

  9. Strabismus - Wikipedia

    en.wikipedia.org/wiki/Strabismus

    Strabismus is an eye disorder in which the eyes do not properly align with each other when looking at an object. [2] The eye that is pointed at an object can alternate. [3] The condition may be present occasionally or constantly. [3] If present during a large part of childhood, it may result in amblyopia, or lazy eyes, and loss of depth ...