This Low Vision book with LEA NUMBERS^® is designed for testing severely visually impaired children and adults. This complete book includes testing at 10 ft (3 meters) and 16" (40 cm). Distance testing line sizes range from 20/800 to 20/16 equivalent. Near vision testing line sizes range from 20/800 to 20/16 equivalent.

When comparing visual acuity results with ETDRS, study results suggest the LEA NUMBERS^® Low Vision Book has a slight advantage over the Feinbloom chart when testing individuals with vision impairment.

Binding position: Top

Testing distance: 10 ft / 3 m  |  16" / 40 cm

Available Online Resources

User Guide: Low Vision Tutorial
Technical Bulletin: Good-Lite Flip Books - Technical Bulletin