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);
The definition of legally blind entails that a person has a vision that is 20/200 in a personâs best eye with correction. Also, the visual field is limited to less than 20 degrees.n example could be that a person under the provisions of being legally blind must stand within 20 feet in order to seen an object that a person with perfect 20/20 vision can see from a distance of 200 feet.