Clinical Trial

Corneal Thickness Changes with Scleral Contact Lenses

Study Description

Corneal Thickness Changes With Scleral Contact Lenses

The purpose of this study is to investigate changes in the corneal thickness of scleral contact lens wearers in a keratoconic (KC) population and compare to age-matched controls. The hypothesis is that scleral contact lens wear is associated with low levels of corneal hypoxia including measurable changes in corneal thickness. Corneal thickness will be altered post scleral lens wear compared to pre-lens wear and the amount of alteration will correlate to the fitting characteristics in the central zone of the scleral lenses. We propose to take a sample of keratoconic and control participants, fit them in scleral lenses, and to measure topographic corneal thickness after 8-10 hours of scleral lens wear after two weeks of wear, to compare two instruments in the measurement of corneal thickness, and to compare the effects of varying central corneal clearance of the scleral lens on corneal thickness.

Location

Locations Selected Location

Methods

No pharmaceutical medication involved No pharmaceutical medication involved
Patients and healthy individuals accepted Patients and healthy individuals accepted

Device - ZenLensâ„¢

The ZenLensâ„¢ semi-scleral lenses are manufactured by Alden Optic Laboratories Inc., Lancaster, NY. They will be made in Boston XO material.

Device - Zenâ„¢ RC

The Zenâ„¢ RC semi-scleral lenses are manufactured by Alden Optic Laboratories Inc., Lancaster, NY. They will be made in Boston XO material.

Additional Information

Official Study Title

Changes in Corneal Thickness in Keratoconic Eyes With Variation in Scleral Contact Lens Central Clearance

Clinical Trial ID

NCT03249233

ParticipAid ID

Le3DQa