Pathophysiologically, astigmatism results from asymmetry, typically in the anterior cornea, but it can also be caused by the posterior cornea or lens. [1] The asymmetry means that light is focused ...

Astigmatism – you’ve probably heard of it, you might even have it, but what actually is it? Let’s find out. You might’ve guessed already from the title (or hearing the term bandied about ...

In This Article People / Dave DeCarlo If you tend to avoid going outside at night because your yard is just too dark, an outdoor light can help banish those scary shadows. With the right lighting ...

The reason: A recent diagnosis of astigmatism in his right eye ... The comment set off a light bulb for Hernández, who ...

You can do this two-dimensionally (if your lights are on a railing, for example), three-dimensionally (all around the Christmas tree, for example), or not at all. The app intuitively identifies ...

LED, halogen, CFL and incandescent and the main types of light bulbs available, although incandescent lights are no longer ...

One important thing to note: Generally, the impact of lack of sleep on the eyes is temporary; getting poor sleep doesn't cause existing vision problems-for example ... and it wouldn't likely affect ...

The best bike lights aren’t simply one of the best cycling accessories, they’re one of the most essential too. Unlike cycling computers, phone mounts and fenders, which can make your ride more ...

Researchers from Madrid explain a phenomenon that allows the direction of light emission to be controlled at the atomic scale ...

Proteins in the lens break down and cause blurry or double vision, sensitivity to light, and difficulty seeing ... This is generally a monofocal lens (for example, one point of focus) that ...