4Sight Newsletters

There is such incredible variation in how eyes work across the animal kingdom that we could spend years studying and barely scratch the surface, so to start out...

That chart, the formal name of which is the Snellen chart (after the 19th-century Dutch eye doctor Herman Snellen who developed it), is certainly a good diagnostic tool for catching nearsightedness, but there are many other things that could be wrong with a child’s eyesight...

All it means when someone has 20/20 vision is that they have normal visual acuity without refractive errors like nearsightedness, farsightedness, or astigmatism...

The temptation can sometimes be to leave the glasses at home instead of wearing them, even though that means going through a day of fuzzy vistas and squinting...

Over 20 million adults 40 and up in the US will develop cataracts, and by the time they reach 80, half of them will. Normally, the lenses in our eyes are filled with transparent protein...

The danger with fireworks is that a lot of people forget that they are explosives, and that’s how they caused 12 deaths and ten thousand injuries in 2019 alone (mostly between mid-June and mid-July)...

The glasses you choose will be a huge part of the first impression you make on people. They’re a great way to show off your personal sense of style, but fashion isn’t the only factor to take into consideration...

All inside something the size of a large marble, light waves are converted into continuous streams of detailed, accurate, moving images that we can understand and respond to...

Strong visual skills are just as important to an athlete’s success as strong muscles. Athletes have to be able to process visual information very quickly so that they can respond to it...

Most of us do it often enough that we might not even notice it every time it happens. Whether we’re tired, our eyes are dry or itchy, or we get something stuck in one of them...