LEA SYMBOLS® Single Cards with Crowding Bars
A set of 30 pediatric acuity cards featuring 2 of the LEA SYMBOLS® optotypes with 50% crowding bars. Each card contains a single symbol with line sizes ranging from 20/200 to 20/8 (6/60 to 6/2.4) equivalent with measurements on reverse side. Set also includes instructions and flash cards. Printed on styrene plastic and clear coated for long durability. Testing distance is 10', 3m.