subject: The Benefits Of Wearing Contact Lenses [print this page] Problems with one's eyesight can be caused by many things and it takes an expert in the field to determine what is wrong. This expert doctor is specially trained to take tests and pinpoint the exact cause of the problem. Contact Lenses is an option for people who do not like regular glasses.
The first idea of the contact lens first appeared in the form of a drawing hundreds of years ago. There were also writings describing the idea. However it was actually around 350 years before the idea was put into action and work was begun on perfecting this type of eye ware.
The contact lens can be very soft or hard and, when placed in the eye, over the cornea, enables a person to see with 20/20 vision. This has been of great assistance to those who must appear on the movie screen or in other prominent places and wish to conceal their vision problem. Others use the lens because they like the convenience and the fact that they do not have to wear conventional glasses.
In purchasing contact lenses one has the choice of soft or hard lens. Either one will correct the vision imperfections of the eyes. The hard, or rigid lens, are said to be able to cover more vision corrections than the soft ones and do not cost as much.
The eye is a very fragile part of the body. That is why there are eyelids to cover it, when necessary, as well as constant moisture to keep the surface moist. Soft lens have been known to cause a lack of oxygen to the eye, pick up particles which cause irritation, and their surface can break which ruins the prescription. They must be kept sterile when not in the eye in order to avoid getting an infection.
Hard lenses are just that, hard. That means, even though they are prescription ordered they are inflexible. They do stay clean longer but there is the danger that they, too, can cut off oxygen to the eye and cause problems. Disease can easy develop behind them if they are not carefully cleaned. It is said that this type lens is not used very much anymore.
Although many would like to, everyone cannot wear contact lenses. Some for practical reasons such as those who are in a profession where the eye is constantly subjected to vapors or fumes or those who are in a job where there is a lot of dust or other debris flying around. Those with medical problems such as dry eyes, severe nearsightedness, allergy to certain products and diabetes are not prescribed this kind of vision correction.
