About Rigid Gas Permeable Lenses

If you want to know about rigid gas permeable lenses (rgp lenses for short) and astigmatism, then I think I can help.

First, there's the eye defect of astigmatism. This is where the shape of the eyeball is kind of twisted, so while the eye can focus in one plane (for example, vertical) the images on another plane (say, 30 degrees to the left of horizontal) are all blurred.

So you can't just use an ordinary lens, like for correcting short-sightedness or long-sightedness.

They used to use special eye glasses to help with astigmatism, but they now they've come up with rigid gas permeable lenses - which will do the trick for many people.

These RGP lenses will focus nearer or further, according to the vertical or horizontal angles of the objects you are trying to see. The lenses are harder than soft lenses, which is why they're called 'rigid'. But they aren't like old fashioned hard lenses.

What's more, rigid gas permeable lenses have to stay aligned - right side up - even when you blink. So they're designed to grip the eyeball very well, or they might be weighed at the bottom so they tilt slightly then settle back down.

For more info about rigid gas permeable lenses, including where to get them and what they cost, just click this link.