Chart:Pelli-Robson Contrast Sensitivity - Set Chart 1 and 2

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Designed for precision and consistency, the Original Pelli-Robson Chart has been trusted for decades in both research and clinical practice. Recognized as the gold standard in cont rast sensitivity testing, it is cited exponentially more often in the U.S. National Library of Medicine than any comparable product. Features: Traditional Sloan Optotypes For use at 100 cm (1 meter) testing distance Show more