Having 20-20 vision means you can clearly see an object from 20 feet away—the distance that most people with healthy vision should be able to read letters clearly. […]
What Does 20-20 Vision Mean?

Having 20-20 vision means you can clearly see an object from 20 feet away—the distance that most people with healthy vision should be able to read letters clearly. […]
Regardless of their type, all eye drops expire and become less effective. Although it’s not ideal, accidentally using expired eye drops once or twice won’t necessarily cause long-term problems. However, consistently using expired eye drops can introduce harmful bacteria to your eye, increasing the risk of infection or other complications. […]
Thankfully, there are plenty of common causes of eye twitching, including caffeine, eye strain, allergies, alcohol, and fatigue. […]
Morning dry eye can stem from several causes, such as nocturnal lagophthalmos, sleeping with contacts in, environmental factors, or underlying medical conditions […]