Contact Lenses
Contact lenses
What Are Contact Lenses
Contact lenses are thin, clear plastic disks you wear in your eye to improve your vision. Contacts float on the tear film that covers your cornea. Like eyeglasses, contact lenses correct vision problems caused by refractive errors.
TYPES OF CONTACT LENSES
Soft Contact lenses (SCL)
Rigid Gas Permeable lenses (RGP)
Coloured Contact Lenses
Scleral Lens
Soft Contact Lenses
Soft contact lenses are composed of malleable plastic polymers. They are very flexible and, when fit properly, the lenses will float over the tearfilm of the eye. They are the most commonly worn type of contact lenses.
Scleral Contact Lenses
Scleral contacts are noticeably larger than standard gas permeable (GP) contacts and have a diameter equal to or greater than that of soft contact lenses. The smallest sclerals are approximately 14.5 mm in diameter, and the largest can be up to 24 mm, scleral lenses are more stable on the eye. They also provide initial comfort similar to soft lenses.
These lenses are mainly used in patients who have keratoconus & in patients who have undergone corneal transplant.
Coloured Contact Lenses
These lenses are mainly used for cosmetic purposes
