Contrast sensitivity is an important part of healthy vision and is needed for daily tasks. Learn about the causes, symptoms, and diagnosis of contrast sensitivity loss.

This 1880s optician’s eye test chart was made by Globe Optical Co. of Boston and was for sale in a Massachusetts antiques shop for $2,200. It’s painted wood with a metal lamp visor and has a ...

Even if your kid is not able to read the letters or is too shy, there are other ways to test their vision. Common eye tests for young children include: Charts with letters, symbols and other ...

The test-retest variability of the charts was similar, with the 95% tolerance limit for change being ±0.14 logMAR for ETDRS, ±0.16 for reduced logMAR and ±0.18 for Snellen.

Now you can practice before your next big eye test. Joking. That's a terrible idea. Do not try to fool your doctor.

The kiosk screen displays a line of letters similar to those on a traditional eye test chart, with one highlighted for the patient to match from a selection on their smartphone.