Distance Visual Acuity Test, Pediatric Opthalmology
SKU : 259200
LEA SYMBOLS Book with Crowding Bars
SKU : 259200
Measurements: 4 in x 4 in (10.2 cm x 10.2 cm).
Test distance: 10 feet/3 meters
Handheld vision test with LEA SYMBOLS® pediatric symbols features 50% spaced contour interaction bars to provide single optotype acuity with the proper crowding effect. Optotype line sizes from 20/100 to 20/20 (6/30 to 6/6) equivalent. This book can also be used for vision testing of illiterate adults or geriatric patients. Includes a response key and instructions. 17 pages.
Measurements: 4 in x 4 in (10.2 cm x 10.2 cm).
Test distance: 10 feet/3 meters
| Brands | Good Lite |
|---|
| Test distance | 10 feet/3 meters |
| Dimensions | 4 in x 4 in (10.2 cm x 10.2 cm) |
| Optotype | line sizes |
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Low Contrast, Pediatric Opthalmology
LEA SYMBOLS Low Contrast Test 10M
Test for quick measurement of low Contrast visual acuity at 25%, 10%, 5%, 2.5%, and 1.25% Contrast by measuring the distance where the symbols are seen. 10M symbols correspond to visual acuity 0.10 at 1 m, 0.05 at 0.5 m and 0.3 at 3 m. VA values are thus easy to calculate. Test includes a table for conversion to Snellen equivalent VA values, a response keys and instructions. 6 pages, 3.25″ x 9″ (8.25 cm x 22.9 cm).
SKU: 251100 -
