Given below is an online test for visual acuity using the E Chart, a chart with the letter 'E' in different directions (up, down, right and left) and sizes. This E chart visual acuity or eye vision ...

Given below is an online color blind test to know whether you suffer from color vision deficiency or not. This Color vision testing is based on the Ishihara Test for color blindness. Color blindness ...

Uveitis is a painful eye condition that causes swelling and can destroy eye tissues. It happens in the middle layer of your eye called the uvea, but it can affect other parts of your eye.

Most component testers require removal of a component to test it. [Mr Carlson] recently restored an old Paco C-25 in-circuit capacitor tester. He does a very complete video tearing it down and ...

Today's optical illusion is all set to challenge you and test your observation skills. The image, filled with repeating numbers “22” and “55” arranged in a grid-like pattern, seems uniform ...

An eye doctor has addressed a common source of confusion during routine eye exams, explaining how the process works in a now viral video. Dr. Claudine Courey, also known as Dr. C or @eyedropshop ...