An Introduction To Prescription Glasses

If you have been prescribed prescription glasses or if someone close to you needs them, then you need to ensure you choose the right pair with the right lenses. About a fourth of the world’s population wears spectacles though not many are aware of what kind of lens is best for them. Unless you know what lenses are suited for your vision problems, you won’t be able to get much joy out of your spectacles. Here is a brief look at what you need to know about choosing your spectacles.

Single or multi-vision glasses?
If you are near or farsighted, then you probably need single vision glasses. However, if you have both near and farsightedness, then you may require multi-vision glasses. Progressive lenses are a good option for those who have multiple vision problems. These lenses allow your eyes to adjust according to the distance at which you are viewing objects. There are no sudden changes of focus which is why many people with multiple vision problems opt for such prescription glasses.

Choose lenses carefully
We all have unique eyes. Depending on your vision problem, you will need to choose your lenses accordingly. The lens types you end up choosing depends on usage as well as age. So, for example, if you have a very poor vision, then your lenses will be on the thick side. To obviate the need to use thick lenses, you can choose high index lenses as these are better at refracting light and they are also very thin as well as light. Overall, these lenses are more comfortable than regular plastic lenses.

Polycarbonate lenses
Polycarbonate lenses are also a good option for those who are choosing their prescription glasses. These lenses are made from hard plastic and so offer better impact resistance and they also provide excellent protection to your eyes against dangerous UV rays of the sun. polycarbonate lenses are also very light and thin and so are a perfect option for use in children’s spectacles.

Photochromic lenses
If your eyes are sensitive to the sun, then you need to choose your spectacles very carefully. Ideally, you should go with photochromic lenses as they are designed to change depending on the amount of light that hits the lenses. In low light conditions, these lenses become lighter while in bright sunshine they turn dark.

Lens coating
Besides choosing the right lenses for your prescription glasses, you also need to choose the right kind of lens coating. To protect the lenses, you should use a scratch-resistant coating. This kind of coating protects the lenses, and it also helps to extend their life. It also makes the lenses more resistant to scratching.

Anti-reflective coating is useful when you want to shield your eyes from headlights while driving in the dark. This kind of coating helps to cut the glare of lights coming from oncoming vehicles. They also make it look like your lenses are thin and transparent and thus ensure clear vision at all times.

Finally, you should also consider using UV coating on the lenses in your prescription glasses. UV rays when they hit your eyes, can cause eye cancer and other problems. This is why it makes sense to coat your lenses with UV coating. Just make sure you get coating which totally blocks UVA and UVB radiations from the sun.