TRICARE covers well-child eye exams from an optometrist or ophthalmologist. 1  Every two years. 2  Between the ages of three and six. 3  Includes screening for amblyopia (lazy eye) and strabismus (crossed eyes)  No cost for well-child exams, regardless of plan.
In the US, the criteria for legal blindness are: Visual acuity of 20/200 or worse in the better eye with corrective lenses (20/200 means that a person at 20 feet from an eye chart can see what a person with normal vision can see at 200 feet);
A person is considered legally blind if his or her corrected vision is no better than 20/200, meaning seeing at twenty feet what others see at two hundred feet or having peripheral fields (side vision) of no more than 20 degrees diameter or 10 degrees radius.