Posters
Preliminary results on rehabilitation of vision using scleral-supported contact lenses after advanced keratoconus and keratoconus surgery
Poster Details
First Author: A.Silva PORTUGAL
Co Author(s): F. Esteves A. Borges J. Salgado-Borges
Abstract Details
Purpose:
To report the short and medium-term results of visual acuity and ocular tolerance, with a scleral supported contact lens fitted after implantation of intra-corneal ring segments (ICRS) for keratoconus and advanced keratoconus (Ks).
Setting:
Hospital da Boa Nova and Clinsborges, Porto,Portugal
Methods:
The Scleral supported contact lenses used were made of Paflufocon D (oxygen permeability = 100 barrer), with a 16.5 mm diameter and vaulting sagittal height between 3900 and 5600 microns. The sagittal height was selected considering the elevation of the 10mm of the central cornea, and the desired separation between lens and cornea (about 300 microns). The LCZ (limbal clearance zone) and SLZ (scleral landing zone) were also considered because we can change them. The patients were evaluated one hour after inserting the lens, and again after thirty days of waring the lens.
Results:
Four patients were evaluated - 3 eyes with ICRS (group1) and 4 eyes of advanced Keratoconus (group2). In group1 best visual acuity (BVA) with glasses or standard CL was 0.3 �� 0.5. One hour after adapting scleral lenses, the VA improved in all eyes to 0.6- 0.9.
In group2, the baseline BVA was 0.2-0.6. One hour after adapting scleral lenses the VA was 0.8 -0.9. Thirty days later BVA was the same in both groups. In neither of the groups we found dyed and corneal hypoxia. All patients reported significant improvement in visual quality maintaining high levels of comfort.
Conclusions:
There is a significant increase in visual acuity with the scleral lenses. Scleral supported contact lenses can be used as an adjunct to corneal surgery for rehabilitation of keratoconus patients.
Financial Disclosure:
NONE
