Contact lenses are becoming widely recognized and used all over the world. You might not notice it by just looking at people, but millions and millions are wearing them. A contact lenses are thin, curved lenses that are placed on the film of the tears and covers the surface of the eye. They are used both for vision correction and for cosmetic purposes. The lenses are naturally clear, but they can be given a slight color tinge to make them to make them easy to handle. Contact lenses have a long and illustrious history, contrary to what most people think, that they are a recent development. The early development of a contact lens that could be worn for a few hours at a time was in the 19th century.
There are two major types of contact lenses. Below is a short description of each type. Soft contact lenses. These are the most commonly used types of contact lenses. These types of contact lenses are made from soft materials that incorporate water and allow oxygen to get to the cornea. They are flexible and soft which makes them comfortable.
Gas permeable lenses. They are referred to as RGPs. They are hard and rigid. They are made from plastic materials combined with some other materials such as silicon and fluoropolymers. They allow oxygen to pass directly to the eye, hence the name gas permeable lenses.
The cost of a contact lens is one thing that you should consider when you go shopping for a contact lenses. To get the best discount on the price of the contact lenses, you have to consider various shops and retail markets. Do not solely depend on the internet for better deals. Sometimes the optical chain in your home town could be the one with the best discount. Here are some tips on getting the best discount deal on contact lenses.
Cosmetic contact lenses, especially, have color added to them. This makes them more appealing. They enhance or completely change the hue of one's eye. They can help create most of the special effect that one has always admired. However, contact lenses are medical devices and should only be put on after a prescription. They should not be brought to a salon, or free market without a valid prescription. The colors that are used to enhance them are sometimes very sensitive and could be harmful to the eye. They might lead to a permanent damage to the cornea and overall eye health.
In case you observe ay discomfort with a prescribed contact lenses, you should contact your doctor immediately.