Amblyopia is a condition in which one or both eyes do not see as well as they should with corrective lenses. Also known as “lazy eye”, this condition only develops in children and may cause vision loss. Amblyopia is associated with conditions such as high nearsightedness and farsightedness, congenital cataracts, and eye turn. Usually a child will develop amblyopia no later than age 6, though it may appear much sooner than that. Your optometrist can diagnose amblyopia during a comprehensive eye exam. A child with “lazy eye” will need to wear prescription lenses and may need vision therapy to help treat the condition.