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allied
academies
Ophthalmol Case Rep 2017 Volume 1 Issue 1
August 21-23, 2017 | Toronto, Canada
EYE AND VISION
3
rd
International Conference on
Statement of the Problem: Keratoconus is a progressive
and idiopathic disease in which the cornea develops into an
irregular and conic shape. The clinical signs include thinning
of the cornea in its central or paracentral region, an apical
protrusion that result an irregular astigmatism, and this
condition can progress 1 . Keratoconus is the most common
form of dystrophy or corneal ectasia, with an incidence of
50–230 per 100,000
persons2.InMexico, the research on
keratoconus is scarce; the articles published show statistics
that are similar to those in international literature, which
indicates a higher prevalence in male patients with a mean
age of 24.5 years3.The incidence is about 1/2000 people in
the general population in Mexico4. Medical management
with scleral lenses is a viable treatment for vision
rehabilitation. Methodology & Theoretical Orientation:
Retrospective, cross-sectional, observational, descriptive
study of 66 patients with diagnosis of keratoconus and other
secondary ectasias post refractive surgery those who were
followed from 2014 and we fitting them with scleral contact
lenses. Findings: We have found two particular situations in
patients fitted with scleral lenses in Mexico: in 80% of cases
a significant impingement occurs in the scleral area with lens
diameter of 15.8 mm and above and due to this peripheral
areas need very flat for better alignment of the edge with
the sclera or smaller diameters. The other situation is that in
34% of cases have made the adjustments to the front surface
due to the presence of residual astigmatism resolving this
situation with Toric designs. Conclusion & Significance:
Scleral lenses provide excellent vision correction and superior
comfort compared to traditional contact lens options for
the management of keratoconus and other ectasias post
refractive surgery. In most of cases Scleral lenses provide a
really visual rehabilitation. Scleral lens should be considered
before surgical intervention. However lens designs should be
improved especially in the landing zone.
e:
jlmonroy_99@yahoo.comScleral Lenses, Mexican Experience
Jose Luis Monroy
Mexico