LEA NUMBERS® Low Vision 60M & 40M Cards

These five LEA NUMBERS® Cards can be used for presentation as single optotypes or arranged in a row as a line test. When the cards are next to each other, the space between the numbers is equal to the width of the symbols. To determine the visual acuity, use the following formula:

VA = Viewing Distance Used (meters) / M-value

Dimensions: 60M cards are approx. 6" x 9" (15.25 cm x 22.9 cm). 40M cards are approx. 4" x 6" (10.2 cm x 15.25 cm).

Testing distance: 40"/1 meter.

Note: All products sold on Accuspire.com should be used by qualified clinician and should be purchased by or on order of a qualified clinician.