Omni Cross Linking Device

Corneal collagen cross-linking is a
technique which uses UV light and a
photosensitizer to strengthen chemical
bonds in the cornea. The goal of the
treatment is to halt progressive and
irregular changes in corneal shape known
as ectasia. These ectatic changes are
typically marked by corneal thinning and
an increase in the anterior and/or posterior
curvatures of the cornea, and often lead
to high levels of myopia and astigmatism.
The most common form of ectasia is
keratoconus and less often ectasia is seen
after laser vision correction such as LASIK.
Corneal Cross Linking is a process of
photopolymerization. During this process
of photopolymerization, singlet oxygen is
being created with the use of riboflavin
as a photomediator activated by UV-light.
Free radicals lead to physical intra- and
interhelical cross links of stromal collagen
fibers. This process takes place mainly in
the anterior 200μ to 250μ of the stroma.
This is important to remember in cases
where a refractive procedure is planned
post-XL.