Revised Series Sloan Letter ETDRS® (Chart 1)
This revised eye chart incorporates a slight change in the difficulty score for each of the ten SLOAN letters derived from the best corrected visual acuity examinations of 7,420 eyes during the ETDRS® study.
$69.75
Product Variations
Description
This revised eye chart incorporates a slight change in the difficulty score for each of the ten SLOAN letters derived from the best corrected visual acuity examinations of 7,420 eyes during the ETDRS® study.
The revised arrangement of letters in the 2000 Series ETDRS® chart resulted in the ultimate homogeneity and balance of the visual acuity test.
Can be wall mounted
2000 series revised ETDRS® charts fit in ETDRS® Illuminator Cabinet CAT. NO. 2425. This Illuminator cabinet provides a consistent and uniform light source behind the ETDRS® visual acuity test. A glare source CAT. NO. 2429 may also be used for more intense visual acuity testing using different lighting situations.
