Differentiating between two subtly different shades is a notoriously difficult task for some of us. Slight variations in ...

Ready to challenge your brain and your eyes at the same time? This optical illusion and IQ-style test is designed to check how sharp your observation skills really are. It looks easy at first, but ...

Visual impairments are often overlooked in research and clinical settings. As many cognitive tests are visually-based, eyesight deficiencies may affect test scores. This is an important caveat, ...

Good vision is a characteristic that is nice to have. Unfortunately, only 35% of adults have 20/20 vision without the use of glasses, contacts, or vision-correcting surgery. Though many of us do not ...

Inherited retinal dystrophies (IRD) are a set of rare eye diseases. They affect your retina, or the part of your eye that detects light. If you have IRD, you may find it hard to read or see in low ...