Posts Tagged ‘Scleral Lens’

Scleral Lenses for patients with conjunctival blebs

Posted on: August 27th, 2009 by G. D.

I am now able to make scleral lenses that have notches in them to accommodate patients who may have a scleral obstruction.  The first photo shows a scleral lens with a 6mm notch.  The second photo shows this lens on a patient’s eye who has a conjunctival bleb after glaucoma surgery.  Without this notch, this patient would not be able to benefit from scleral lenses.

scleral notch

scleral notch

scleral lens with notch on a patient with a bleb

scleral lens with a notch on a patient with a bleb

Keratoconus Research

Posted on: July 22nd, 2009 by G. D.

This is an abstract from research that is being conducted by Dr. M. Christina Kenney who is prominent research scientist at the University of California Irvine.

PURPOSE: Keratoconus is a disease that has been recognized clinically for many years. However, it is only more recently that a better understanding has been achieved in the area of keratoconus pathogenesis. The purpose of this paper is to summarize the completed research, review ongoing studies, and present a hypothesis for keratoconus pathology. METHODS: We used immunochemistry and molecular techniques to characterize keratoconus corneas. RESULTS AND CONCLUSIONS: Our hypothesis attempts to incorporate many of the recognized biochemical and molecular abnormalities found in the keratoconus corneas. Our hypothesis states: 1) there is abnormal processing of the free radicals and superoxides within the keratoconus corneas; 2) there is a build-up of destructive aldehydes or peroxynitrites within the corneas; 3) the cells that are damaged irreversibly undergo the process of apoptosis; and 4) the cells that are damaged reversibly undergo wound healing or repair. As part of the wound healing process, various degradative enzymes and wound healing factors are upregulated, which leads to focal areas of corneal thinning and fibrosis. Future studies will be directed to test this working hypothesis and determine if these theories are valid.