pediatric eye chart featuring HOTV optotypes for screening/testing the vision of children and adults 3 years and older - proportionally spaced (logMAR) line sizes range from 20/125 to 20/8 (6/38 to 6/2.4) equivalent - preliterate children can use the response key to point to what letter they see, or hold up flash cards for each optotype - set includes chart, response key, flash cards, and instructions - this chart can be used in C.O.I. illuminated cabinet # 50.028.00 or hung on the wall - chart size is 9"x14" (22.9 cm x 35.6 cm) - 10 feet, 3 meter testing distance