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When looking at a faraway object, they move by rotating outwards towards the ears or diverge. Convergence and divergence are unique eye movements as these are the only eye movements that are not conjugate (meaning the eyes move in the same direction) but are instead termed disconjugate.
More advanced exercises for convergence and divergence insufficiencies include Vectograms, Tranaglyphs, and Stereoscopes. See how they can help.
Simply, converging of both eyes towards each other is called convergence of eyes. Convergence is a vital ocular movement where both eyes turn inward, aligning their lines of sight to meet in front of the eyes.
Vergence eye movements can be segregated into two descriptive subcategories: convergence and divergence. Convergence is the inward disconjugate movement of the eyes, whereas divergence is the ability for the eyes to move outwards in an opposite direction.1 Stimuli for vergence includes retinal blur and target displacement.5 Degenerative ...
Jump convergence - assessment of the convergence quality of fixation when moving quickly from distance to a near target. The convergence ability should be a part of routine examinations. Patients with a poor convergence while reading may suffer from headache, diplopia and/or blurred vision.
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.
Unlike other types of eye movements in which the two eyes move in the same direction (conjugate eye movements), vergence movements are disconjugate (or disjunctive); they involve either a convergence or divergence of the lines of sight of each eye to see an object that is nearer or farther away.
Convergence the lines of sight each turn inward toward the nose, with Divergence the lines of sight turn outward toward the temples. One can define an Iso-Vergence Circle to represent all points in the visual plane which have the same horizontal vergence angle.
The geometrical requirements for binocular fusion are stated, and the main features of horizontal vergence eye movements are described, together with an influential schema of understanding the...
What Is Convergence Insufficiency? When we use near vision for reading, we turn both eyes inward (converge) to focus on the page. With convergence insufficiency, the eyes don’t converge enough for near vision. The binocular function (both eyes working together) we use to read is impaired. One or both eyes may turn outward while reading.