The Contact lens designed to manipulate the appearence to the eye is called cosmetic contact lenses. Where as, the contact lenses contemplated to enhance the vision of the eye is called corrective contact lens. The functional reasons will play major role in many people wearing corrective contact lenses, on behalf of eyeglasses and these eyeglasses are also referred to as cosmetic contact lenses. Ofcourse there are people who will wear cosmetic contact lenses for functional perks.

In 1888, the german citizen August Muller, designed the scleral glass-blown contact lenses to correct his own disorder called myopia. Until 1930's the Glass-blown scleral contact lenses are the only contact lenses. Later, with the intervention of polymethyl methacrylate, the plastic scleral contact lenses had been manufactured for the first time ever. The soft contact lens is also called as the bandage contact lens and is placed on an diseased or injured cornea. This will help to protect the cornea from constant rubbing and blinking of eyelids and plays major role in curing the disease.

The daily wear contact lenses had been contemplated in such a way that they have to be removed before sleeping where as, one can wear the extended contact lenses during the night time also, typically for six or more successive nights. With the introduction of silicone hydrogels material the time period has been prolonged from six successive nights to 30 or more continuous nights.

All meridians of the contact lenses have the same power correction is the foremost advantage of the Spherical contact lenses, where as, for the toric contact lenses the power correction varies from one meridian to other meridian. People who cannot able to wear the regular contact lenses due to myopic, hypermetropic and astigmatism can wear toric contact lenses.