Contributor: Gordon K. Klintworth
Amblyopia is a common disorder that is subdivided into numerous variants: alcoholic amblyopia [amblyopia - alcoholic], arsenic amblyopia [amblyopia - arsenic], color amblyopia [amblyopia - color], deficiency amblyopia [amblyopia - deficiency], deprivation amblyopia [amblyopia - deprivation], amblyopia ex anopsia [amblyopia - ex anopsia], noctural amblyopia [amblyopia - nocturnal], nutritional amblyopia  [amblyopia - nutritional], quinine amblyopia [amblyopia - quinine], reflex amblyopia [amblyopia - reflex],  strabismic amblyopia [amblyopia - strabismic], tobacco amblyopia [amblyopia - tobacco], toxic amblyopia [amblyopia - toxic], traumatic amblyopia [amblyopia - traumatic], and uremic amblyopia [amblyopia - uremic]. Impaired visual acuity caused by defective visual stimulation of the brain during infancy usually because of impaired binocular vision from an early age. The visual acuity is not correctable with lenses and occurs in the absence of an obvious anatomic defect in the eye or visual pathways. Amblyopia manifests as poor vision and it most often occurs in the deviating eye of persons with misaligned eyes. It can be prevented or reversed by early treatment. An acquired type of amblyopia is tobacco-alcohol amblyopia.