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 Post subject: Contact lenses for irregular corneas
PostPosted: Tue Apr 25, 2006 1:17 am 

Joined: Sat Nov 26, 2005 1:23 pm
Posts: 2080
Cataract & Refractive Surgery Today
April 2006

Contact Lenses for Irregular Corneas
By Jeffrey Sonsino, OD, FAAO


Gas-permeable contact lenses are widely used to correct eyes with irregular corneas. These lenses are composed of a rigid polymer that enables them to hold their shape against an irregular corneal surface, thereby creating a tear layer that corrects for optical aberrations such as irregular astigmatism. Although penetrating keratoplasty (PKP) procedures have provided much of the experience needed to fit contact lenses to irregular corneas, the growing number of patients seeking contact lenses after complicated refractive surgery inspires eye care professionals to search for improved techniques and materials. The following articles were reviewed for the analysis of contact lens fitting following PKP and refractive surgery:

Touzeau O, Borderie VM, Allouch C, Laroche L. Late changes in refraction, pachymetry, visual acuity, and corneal topography. Cornea. 2006;252:146-152.
Gruenauer-Kloevekorn C, Kloevekorn-Fischer U, Duncker GI. Contact lenses and special back surface design after penetrating keratoplasty. Br J Ophthalmol. 2005;89:1601-1608.
Javadi MA, Motlagh BF, Jafarinasab MR, et al. Outcomes of penetrating keratoplasty in keratoconus. Cornea. 2005;24:941-946.
Lagnado R, Rubinstein MP, Maharajan S, Dua HS. Management options for the flat corneal graft. Cont Lens Anterior Eye. 2004;27:27-31.
Martin R, Rodriguez G. Reverse geometry contact lens fitting after corneal refractive surgery. J Refract Surg. 2005;21:753-756.
Rubinstein MP, Sud S. The use of hybrid lenses in management of the irregular cornea. Cont Lens Anterior Eye. 1999;22;87-90.

Read the entire article at:
http://www.crstoday.com/PDF%20Articles/ ... 06_PR.html

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