Contact lens enhances the vision of the person who wears it by reducing spectacle aberrations and increasing the visual field, thereby gives a natural vision.
Types of Contact Lenses
 
·               Soft Contact Lenses
·               Rigid Contact Lenses
·               Extended Wear Contact Lenses
·               Disposable Contact Lenses
·               Cosmetic (Decorative) Contact Lenses
 
Soft Contact Lenses
Soft contact lenses are made of soft, flexible plastics that allow oxygen to pass through to the cornea. Soft contact lenses may be easier to adjust to and are more comfortable.  Newer soft lens materials include silicone-hydrogels to provide more oxygen to your eye while you wear your lenses.
Rigid Contact Lenses
Rigid contact lenses are more durable and resistant to deposit buildup, and generally give a clearer, crisper vision. They tend to be less expensive over the life of the lens since they last longer. They are very easier to handle and less likely to tear.
Extended Wear Contact Lenses
Extended wear contact lenses are available for overnight or continuous wear ranging from one to six nights or up to 30 days. These lenses require little or no cleaning and have minimal risk of eye infection if it is worn correctly.
Disposable Contact Lenses
These latest generation lenses are available as spherical and toric contact lenses which can be disposed as either quarterly, monthly, fortnightly, weekly or on a daily basis.
Cosmetic (Decorative) Contact Lenses 
These lenses used mainly by the youth to give a cosmetic appearance to their eyes by changing the eye color. These types of lens are available in variety of colors.