CONTRAST SENSITIVITY CHARTS - Sine-wave Grating Testing Modalities

Contrast Sensitivity Charts > Sinewave Grating Testing Modalities

Sine-wave grating charts test both near and far contrast sensitivity using an accompanying light meter to standardize light levels. By standardizing light levels for the chart, it is possible to standardize contrast sensitivities, an important consideration not found in some light boxes. The advantages of contrast sensitivity test charts are their low cost, simplicity, swiftness, and (for the near tests) portability and convenience. The disadvantages are their requirement for standardized room light levels and multiple charts for repeated measures. (In references, see: Ginsburg AP. Next Generation Contrast Sensitivity Testing.)

Contrast Sensitivity View-in Testers :: Sine-wave grating contrast sensitivity testing is available in view-in testers as seen below. The advantages of view-in testers are that they eliminate the need to control room light levels and can be used in a small test space.

VSRC's contrast sensitivity view-in tester -- the CST 1800 Digital.

Computer/Video Contrast Sensitivity Testing :: Computer/video grating tests offer the highest degree of test flexibility in terms of technique, target configuration, and spatial frequencies. The disadvantage to to these systems is that they are relatively costly and complex. They also require careful consideration and monitoring of contrast calibration of the video display. (In references, see: Ginsburg AP. Next Generation Contrast Sensitivity Testing.)

Contrast Sensitivity Charts > Sinewave Grating Testing Modalities

 

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