Keratoconus: Causes, Symptoms, Diagnosis, and Treatment
by Jennifer Besline Ophthalmologist
Keratoconus is a progressive
thinning and the steepening condition of the cornea. Normally, the
outermost layer of the eye, or cornea, is a smooth an even-rounded
surface that refracts light in a uniform fashion. With keratoconus, the cornea
becomes thinner, weaker and thus unable to support the shape, creating a bulge
that affects vision. The exact cause of keratoconus is still uncertain (likely
a combination of genetics and the environment) but the number of patients,
especially in Oman, makes it one of the most common conditions seen on a daily
What are the
symptoms of Keratoconus?
Keratoconus, often starts already
during the teenage years with blurring or distortion of vision and possibly
light-sensitivity. A usual complaint needs new glasses or
contact lenses more frequently. Often, the prescription changes towards more
nearsightedness and astigmatism. Known associations between keratoconus and
certain other conditions exist, such as vernal keratoconjuncivitis and Down's
How is Keratoconus
A keratoconus diagnosis can only be
confirmed by an ophthalmologist, but a visit to your optician or optometrist can
raise suspicion enough to refer you for further evaluation. In either case, a
full eye examination, corneal topography mapping along with clinical findings
and patient history lead to a final diagnosis. With unconfirmed cases where
suspicion is raised, your ophthalmic care provider is likely to ask you for a
follow-up visit to repeat the investigations.
How is Keratoconus
All possible management options are
available at the Finland Eye Center from non-invasive to surgical. In the early
stages, special contact lenses can be fitted. However, while some patients can
control their keratoconus this way for some time, many will find that contact
lenses become insufficient. Another option available at FEC is the implantation
of intracorneal rings (ICR). These tiny semi-circular devices can be placed
inside the cornea in a quick out-patient session to provide more effective
support and flattening of the cornea. Please see 'Intracorneal Rings' leaflet
for more information. A further option is corneal cross-linking (CXL), which
can be highly effective even at halting the progression of keratoconus. This is
a combination of riboflavin (Vitamin B12) and UV-A light applied to the cornea
to strengthen the structure.
Joined APSense since, March 27th, 2018, From Qurm, Oman.
Created on Jul 5th 2018 04:15. Viewed 388 times.
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