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Category Archives: Optometric Instrumentation

Contrast Sensitivity and Measuring Methods

What is contrast?

It is created by the difference in luminance from two adjacent surfaces.

According to Michelson,

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Sushma December 31, 2016 Optometric Instrumentation

How to construct a Visual Acuity Chart?

Before constructing a Visual Acuity Chart, we need to know and decide what kind of chart we want to construct. There are different kinds of charts for visual acuity measurement.

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Sushma November 10, 2016 Optometric Instrumentation