Designed to measure visual acuity with a standard line test and with three tighter spaced tests; 50%, 25% and 12.5%, which often reveal difficulties in seeing tightly crowded details. Line sizes range from 20/400 to 20/10 (6/120 to 6/3) equivalent, 0.05 to 2.00. Card measures 8" x 10" (20.3 cm x 25.4 cm).

16 inches/40 centimeters testing distance

https://www.leatest.com/sites/default/files/pdf/270900_NumbersNearVision.pdfhttps://www.leatest.com/sites/default/files/pdf/270900_ResponseKey.pdf