Hanks Paediatric Test Cards were developed by an experienced optometrist and are designed for use when testing the vision of young children.
Optotypes are symbols calibrated for visual acuity from 6/60 to 6/4 (20/200 to 20/14). They have also been tested in clinical trials to confirm recognition of the symbols by young children.
A collection of 66 cards, each one is heavy laminated, in a convenient "O" ring binding. Approx 6 x 6 inches. (Brand new).