High intakes of vitamin B6 from food sources have not been reported to cause adverse effects [1]. However, chronic administration of 1â6 g oral pyridoxine per day for 12â40 months can cause severe and progressive sensory neuropathy characterized by ataxia (loss of control of bodily movements) [7,29-32].
Accommodative insufficiency (AI) is a condition in which people find it difficult to focus on near objects, to an extent which is unusually poor for their age group.The condition can occur in young people and children, and it is not caused by a problem with the lens of the eye.his means that accommodative insufficiency is different from the disorder known as presbyopia, commonly seen in people over the age of 40. In presbyopia, the lens loses its elasticity and its ability to adapt for near focusing.
Thomas AH. PURPOSE: Divergence insufficiency is an unusual form of strabismus with esotropia and diplopia only at distance and single binocular vision at near. This retrospective case series describes the diagnosis and treatment of 7 patients and differentiates this clinical entity from other conditions.ONCLUSIONS: Divergence insufficiency is a distinct clinical entity in otherwise healthy patients, which can be successfully treated by unilateral or bilateral medial rectus recession. [PubMed-indexed for MEDLINE].