Both ETDRS Letters and Continuous Reading Examples have sizes 20/400 to 20/10 in 17 increments. Pages are tabbed at each contrast level.
Includes Instructions, Score Card, and Recording Form. Near Contrast testing can provide an efficient means to detect or track ocular pathologies, including glaucoma, ARMD, diabetic retinopathy, cataract, and keratoconus. Low contrast acuity loss measurement can also be helpful in demonstrating to patients and their families the need for intervention such as cataract surgery or occupational and lifestyle changes.
This booklet is printed on high-quality styrene plastic for durability.
The continuous text at each contrast level provides a 'real world' example to help patients' recognize any decline in low contrast acuity. Use of this test booklet at near (16 inches or 40 cm) is much quicker than repositioning a patient to use a distance contrast test such as the Pelli-Robson. Since both full contrast and other contrast levels are presented under the same conditions, the illumination is identical. This permits accurate comparison of the results at the various contrast levels.