Hardly there is a person who is not aware of the existence and use of contact lenses, especially those who wear glasses. Indeed contacts have gained great popularity in the recent years mainly because of the new, modern types that have been developed.
While in the old days they used to be made of glass and prescribed to patients with therapeutic or corrective purposes, today they are turning into an accessory for those who has no problems or whatsoever with their eyes.
Modern contact lenses are soft, made of material that is harmless to the eye. They are easy to put on and take off as well as easy to maintain. Soft ones are made of gel and they are much safer to the eye than the old fashioned glass lenses.
There are many manufacturers offering this amazing product, however the basic types of lenses is the same. There are lenses made to improve vision. They serve as regular glasses. Moreover there are lenses specifically designed to help those who have problems with color vision.
Apart from vision problems, some lenses are made to specifically help other eye problems such as bullous keratopathy, dry eyes, corneal ulcers and erosion, keratitis, corneal edema, descemetocele, corneal ectasis, Mooren’s ulcer, anterior corneal dystrophy, and neurotrophic keratoconjunctivitis. Some lenses are even used to deliver drugs to the eye.
Apart from the use of contacts instead of glasses with medical purposes, there are lenses made to simply enhance your look. Those so called cosmetic lenses are made to change the way your eye look – they can change its color and even give your eye an unusual appearance. Cosmetic contact lenses can also correct vision.
Each type of lenses has a specific wear time and conditions of use. Ones made of glass are more durable and can be used many years. Soft lenses have shorter life. There are daily lenses (have to be taken out every night), weekly lenses (can stay in the eye for about a week) and monthly lenses. Despite of the type of your lenses however soft lenses usually should be replaced in about 2-3 months.
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