Amblyopia

n. distorted vision, unclear vision

Amblyopia, or lazy eye, is a disorder of the eye that is characterized by poor or indistinct vision in an eye that is otherwise physically normal, or out of proportion to associated structural abnormalities. It has been estimated to affect 1–5% of the population.The problem is caused by either no transmission or poor transmission of the visual image to the brain for a sustained period of dysfunction or during early childhood. Amblyopia normally only affects one eye, but it is possible to be amblyopic in both eyes if both are similarly deprived of a good, clear visual image. Detecting the condition in early childhood increases the chance of successful treatment.
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Amblyopia is an uncorrectable decrease in vision in one or both eyes with no apparent structural abnormality seen to explain it. [more]Amblyopia - Community and Resources

Noun
1. visual impairment without apparent organic pathology
(hypernym) visual impairment, visual defect, vision defect, visual disorder

n. amblyopia, distorted vision, unclear vision