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2. Worth 4 dot test - Wikipedia

   en.wikipedia.org/wiki/Worth_4_dot_test

   The test is indicated with the use of a presence of a prism in individuals with a strabismus and fusion is considered present if 4 lights are maintained, with or without the use of a prism. The W4LT can also be indicated when aiding a person to develop and strengthen their fusional capacities.

3. Congenital fourth nerve palsy - Wikipedia

   en.wikipedia.org/wiki/Congenital_fourth_nerve_palsy

   The cause of congenital fourth nerve palsy is unclear in most cases. It may be neurogenic in origin, due to a dysgenesis of the CN IV nucleus or nerve, but a clinically similar palsy may result from absence or mechanical dysfunction (e.g., abnormal laxity) of the superior oblique tendon.

4. Cyclotropia - Wikipedia

   en.wikipedia.org/wiki/Cyclotropia

   Cyclotropia is a form of strabismus in which, compared to the correct positioning of the eyes, there is a torsion of one eye (or both) about the eye's visual axis. . Consequently, the visual fields of the two eyes appear tilted relative t

5. Cover test - Wikipedia

   en.wikipedia.org/wiki/Cover_test

   Whether the test was performed with/without glasses; Whether the test was performed with/without a compensatory head posture; In a poorly controlled phoria recovery may not occur and the deviation will be manifest - make a note of this also; Examples of a cover test recording: [1] CT: cc sml LXT/XT' nhf CT: sc mod E/E' c r.r CT: cc RET holds ...

6. Suppression (eye) - Wikipedia

   en.wikipedia.org/wiki/Suppression_(eye)

   During an eye examination, the presence of suppression and the size and location of the suppression scotoma may be the Worth 4 dot test (a subjective test that is considered to be the most precise suppression test), or with other subjective tests such as the Bagolini striated lens test, or with objective tests such as the 4 prism base out test.

7. Exotropia - Wikipedia

   en.wikipedia.org/wiki/Exotropia

   Although glasses and/or patching therapy, exercises, or prisms may reduce or help control the outward-turning eye in some children, surgery is often required. 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 ...