Depth perception is the ability to accurately judge distances between two objects. This is a critical skill for a person […]
The Ishihara test
Are you curious about the Ishihara Test? This is a color vision test used to diagnose color blindness, but what […]
Visual acuity App. Download now.
A red-green duochromatic or bichromatic test is a commonly used test to refine the final sphere in refraction, which makes […]