20/20 vision is often described as “perfect” eyesight—but it’s only a reflection of the sharpness or clarity of vision at that distance. Sometimes, people see well from a distance but have trouble with near vision (due to presbyopia or hyperopia, for example).

Olympic athletes know that to perform their best, they’ve got to be at their best—mentally and physically. And when we say “physically,” we don’t just mean an athlete’s strength or endurance: it can also mean factors like their eyesight.

Summer is a season of simplicity. It’s about doing less and relaxing more. So, if you’re somebody who relies on reading glasses to see close-up distances clearly, we can understand some of the frustrations you may be feeling—especially during these hot, hazy summer months.

There are many reasons why you might have red eyes. In this blog post, we look at some of the most common causes of itchy, irritated, and bloodshot eyes.