Contrast Sensitivity Test with Sloan letter optotypes
Pelli-Robson Traditional Contrast Sensitivity Charts
The Traditional Pelli-Robson Contrast Sensitivity Charts are for use at 1m testing distance and feature the Sloan letter optotypes.
The charts may be wall or easel mounted and illumination of 85 cd/m² is key to good results.
The letter sequences are organised into groups of three with two triplets per line. Within each triplet, all letters have the same contrast. The contrast decreases from one triplet to the next, even within one line.
Select a pair or single charts from the dropdown menu above and download the instructions here.
The testing of contrast sensitivity on a regular basis is key to detecting early signs of diseases such as Parkinson’s, Glaucoma, and Cataracts. By testing with several different contrast levels configured together, the patient’s contrast sensitivity level is better assessed and records will be more precise.
Shipping weight: 3.2kg
Dimensions: 84cm x 56.7cm
Country of origin: US