4Sight Newsletters

The main health risk that tends to come to mind with a smoking habit is lung cancer, perhaps followed by oral health problems, but it doesn’t merely harm the parts of the body that come into direct contact with the smoke...

Melanin helps to protect the eye by absorbing light (including some UV light) that hits the iris, which is the part of the eye that controls the amount of light that reaches the retina...

Roman philosopher Seneca is recorded to have used a glass globe of water to magnify text, while Emperor Nero would use a magnifying emerald to see gladiator fights better...

Getting enough sleep is great for our overall health and our eye health alike. At the other end of things, we can improve the quality of our sleep if we are more careful about what we put in front of our eyes before we go to bed...

For any serious changes, it’s critical to get an early diagnosis. Many sight-threatening conditions that are associated with advancing age are combatted best by being discovered in the early stages...

It’s as important to get preventative care for our eyes as for our teeth, and that means getting eye exams when we don’t need an updated prescription for our glasses or contact lenses...

Let’s look at a few of the most powerful eyes in nature and find out what makes them work so differently from the way ours do...

Was the big E eye chart on your list? That’s the Snellen chart, named after Herman Snellen, a 19th-century Dutch eye doctor who developed it, and it’s a great diagnostic tool for catching nearsightedness...

That’s actually a leftover idea from a British propaganda campaign during World War II. The British wanted to keep their newly developed radar technology a secret from the Germans...

They may often be tempted to leave their glasses at home instead of wearing them to school, even if that comes at the expense of hours of squinting and fuzzy scenery...