What is Collagen Cross-Linking ?
Collaged cross-linking is a new treatment for keratoconus which uses a photosensitizing
agent, riboflavin (Vitamin B2) & ultraviolet light (UVA, 365 nm) exposure. Ultraviolet
light is used to promote increased cross-linking between collagen fibres within
the cornea.
This less invasive procedure leads to rapid recoveries and reduces the risks of
sight threatening complications like hemorrhaging, infection and wound rupture.
How is the treatment done ?
The treatment is performed under topical anesthesia. The skin (epithelium) of the
surface of the cornea is partially scratched, followed by application of Riboflavin
eye drops for 30 minutes. The eye is then exposed to UVA light for 30 minutes. After
the treatment, antibiotic ointment is applied and an eye-pad is worn overnight until
the next day when the surface of the eye has healed. Oral analgesics are required
for the first 1-2 days
A common disease that can cause damage to this inner layer of the cornea is Fuchs'
Corneal Dystrophy. This inherited eye disease causes the cornea to swell opacify
and distort vision.
Is ultraviolet light harmful?
Ultraviolet a light used in this procedure is not harmful to the eye in measured
doses. The light emitting diodes used in the C3-R device is of a wavelength that
is not harmful. Furthermore, light emission is carefully measured and calibrated
prior to each treatment.
Is ultraviolet light harmful?
DSAEK is an outpatient procedure. No hospitalization is required. The entire surgery,
including prepping the eye, usually takes between 45 and 60 minutes.
How often will I need to be followed ?
You will be seen soon after the procedure to remove the contact lens and you will
remain on eye drops for a few weeks. You will be seen at 1 month, 3 months, 6 months
and one year. Following this it is important that you be seen on an annual basis.
When can I wear contact lenses again ?
You may return to wearing lenses after one month. Your lenses may need to be changed
if your cornea changes shape.