Causes of Cataracts

Perhaps you are thinking of joining the increasing ranks of contact lens wearers. A lot of people with vision problems prefer contacts because they are more comfortable than glasses and they do not affect their appearance. Glasses slip down your nose, weigh on your ears and nose, and have glare problems with light. You also have to have special lenses or an extra pair to keep the sun from blinding you when wearing glasses. Contacts lenses avoid all this and simply correct your vision problems and allow you to see perfectly normally. They are very difficult to see in the eye so most people will not even know that you are wearing them.

A lot has changed since contacts were first introduced. The first contact lenses were of the “hard” type. These were made of a type of glass and were very rigid and uncomfortable to wear. As a result most people chose glasses as they were cheaper and easier to wear. After all it was very easy to scratch your eye with a hard contact lens when trying to get it out because of the rigidity of the material. Soon glass material was replaced with a polymer based products making contact lenses a little more comfortable. However the restricted oxygen flow to the cornea was causing eye sight problems in individuals who wore contacts for several years.

The latest products are silicon hydrogel lenses. These are usually referred to as “soft” lenses. They are made from a plastic like material which allows them to fit the eye much better than earlier lens types. They are also thinner and allow oxygen through. This does result in them being rather delicate but they are more comfortable than earlier versions. It is an almost weightless material so your eye will barely feel its presence.

The arrival of silicon hydrogel lenses has also brought a range of colored lens which can be used to change your eye color. You may have seen some one with violet, jade, yellow or red eyes. These color contacts can be very effective but there is a downside. They are a bit heavier than normal lenses and they tend to let less oxygen through to the eye. You can also have corrective lenses for conditions like astigmatisms. For people who need to correct both far and nearsightedness bi-focal contact lenses are also available.

Without doubt your first step in getting contacts must be to have a proper eye examination and obtain a prescription for the type of lenses you want (provided your eye care professional agrees that they are suitable). You can then buy a small quantity of the prescribed lenses to ensure that you can live happily with them. At that point you can think about buying discount contact lenses on the internet. Buying contacts on line is actually much easier than buying eyeglasses online because with glasses there are more issues to consider. With contacts you simply have to enter your prescription and you will get exactly the same lenses at a much lower price.

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