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::KERATOCONUS
Treatment for Keratoconus:
In the earliest stages Glasses and
Contact Lenses will help. But as the disease progresses, Glasses or
Contact lenses may not be of help. This is because the cornea thins a
lot and becomes more irregular and Glasses will not help.
Gas permeable contact lenses: If
eyeglasses or soft contact lenses cannot control
keratoconus, then gas permeable (GP)
contact lenses are usually the preferred treatment. Their rigid lens
material enables GP lenses to vault over the cornea, replacing the
cornea's irregular shape with a smooth, uniform refracting surface to
improve vision. But Hard Contact Lenses are difficult to use and are
uncomfortable and fitting them on the
Keratoconic
Cornea is a time consuming procedure.
Piggybacking" contact lenses: Because
fitting a gas permeable contact lens over a cone-shaped cornea can
sometimes be uncomfortable for the individual with
keratoconus, some eye care
practitioners advocate "piggybacking" two different types of contact
lenses on the same eye. For
keratoconus,
this method involves placing a soft contact lens, such as one made of
silicone hydrogel, over the eye and then fitting a GP lens over the soft
lens. This approach increases wearer comfort because the soft lens acts
like a cushioning pad under the rigid GP lens.
Intacs: Intacs or corneal inserts
received U.S. Food and Drug Administration approval for treating
keratoconus in August 2004. These tiny
plastic inserts are placed just under the eye's surface in the
periphery of the cornea and help re-shape the cornea for clearer vision.
Intacs may be needed when
keratoconus
patients no longer can obtain f unctional vision with contact lenses or
eyeglasses.
C3-R: Another new procedure for
treating
keratoconus, known by
the brand name of C3-R (corneal collagen cross-linking with riboflavin),
is a non-invasive method of strengthening corneal tissue to halt
bulging of the eye's surface. It's also known as CCL procedure.
In the procedure, eye drops containing riboflavin (vitamin B2) are
placed on the cornea which eventually absorb it , and are then activated
by ultraviolet (UV) light to strengthen links between the connective
tissue (collagen) fibers within the cornea.
Corneal transplant : Some people with
keratoconus can't tolerate a rigid
contact lens, or they reach the point where contact lenses or other
therapies no longer provide acceptable vision. The last remedy to be
considered may be a cornea transplant, also called a penetrating keratoplasty
(PK or PKP). Even after a transplant, you most likely will need glasses
or contact lenses for clear vision.