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Convergence Insufficiency. Other names. Convergence disorder. Specialty. Ophthalmology, optometry. Convergence insufficiency is a sensory and neuromuscular anomaly of the binocular vision system, characterized by a reduced ability of the eyes to turn towards each other, or sustain convergence .
Accommodative excess may occur secondary to convergence insufficiency also. In convergence insufficiency near point of convergence will recede, and positive fusional vergence (PFV) will reduce. So, the patient uses excessive accommodation to stimulate accommodative convergence to overcome reduced PFV.
Risk factors include a family history of the condition, diabetes, certain medications, and tumors around the eye. It is a type of refractive error. Diagnosis is based on an eye exam. Management can occur with eyeglasses, contact lenses, or refractive corneal surgeries.
Risk factors: Premature birth, cerebral palsy, family history: Diagnostic method: Observing light reflected from the pupil: Differential diagnosis: Cranial nerve disease, convergence insufficiency: Treatment: Glasses, surgery: Frequency ~2% (children)
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 the eyes to work together when used for near viewing, such as reading.
Exophoria can be caused by several factors, which include: Refractive errors – distance and near deviation approximately equal. Divergence excess - exodeviation is more than 15 dioptres greater for distance than near deviation. Convergence insufficiency – near exodeviation greater than distance deviation.
A review published in 2023 in the Journal of Alzheimer's Disease found that eating meat, particularly red and processed meat, and ultra-processed foods was a risk factor for Alzheimer's. On the ...
Suppression of an eye is a subconscious adaptation by a person's brain to eliminate the symptoms of disorders of binocular vision such as strabismus, convergence insufficiency and aniseikonia. The brain can eliminate double vision by ignoring all or part of the image of one of the eyes.
The bill, which has been referred to committee but has yet to receive a vote, would effectively ban hedge funds from owning any single-family homes within 10 years of its passage. The Merkley ...
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 ...