EYE CHART ALLEN PRE SCHOOL CARDS
Set of 4 cards w/illustrations. Cards are 4"X4". The test is a valid index of visual acuity recorded in terms of a 30-foot denominator.
EYE CHART ALLEN PRE SCHOOL CARDS
Set of 4 cards w/illustrations. Cards are 4"X4". The test is a valid index of visual acuity recorded in terms of a 30-foot denominator.