ASF Pelli Robson Contrast Sentivity Chart

The ASF Pelli Robson Contrast Sensitivity Chart is a specialized diagnostic tool for ophthalmology, designed for use in hospitals and clinics. It is employed to assess a patient's contrast sensitivity, a crucial metric for detecting early signs of various ocular and neurological conditions, including Parkinson's disease, glaucoma, and cataracts. This chart offers a practical method for evaluating a patient's ability to discern large, faint objects, providing insights beyond standard visual acuity tests.

Constructed from durable cardboard, the ASF Pelli Robson Contrast Sensitivity Chart features traditional Sloan Optotypes. The chart is designed for testing at a distance of 1 meter, with letters subtending an angle of 3 degrees. It is printed on both sides, presenting different letter sequences to minimize memorization. The letters are systematically arranged in a series of two triplets per line, where the contrast progressively reduces from one triplet to the next, enabling a precise measurement of contrast thresholds.

As a medical device intended for clinical diagnostic applications, the Pelli-Robson Contrast Sensitivity Chart is subject to general regulatory controls to ensure its safety and effectiveness in healthcare settings. Its design adheres to recommendations from authoritative bodies, making it a recognized standard in vision research and clinical practice.

Key Features : 

Designed for the clinical assessment of contrast sensitivity in hospital and clinic environments
Manufactured from cardboard, ensuring suitability for repeated professional use
Features traditional Sloan Optotypes with letters subtending 3 degrees at 1 meter, arranged in contrast-reducing triplets
Aids in the early detection and monitoring of conditions such as Parkinson's, Glaucoma, and Cataracts
Complies with general regulatory controls applicable to medical devices for diagnostic purposes