Corneal and Epithelial Thickness Changes After 4 Weeks of Overnight Corneal Refractive Therapy Lens Wear, Measured With Optical Coherence Tomography

PURPOSE: To investigate thickness changes of the total cornea and epithelium across the horizontal corneal meridian after 4 weeks of overnight corneal refractive therapy (CRT) rigid contact lens (Paragon Vision Sciences, Mesa, AZ) wear. METHODS: Thirty subjects were fitted with CRT contact lenses (Dk/t = 67), which were worn overnight for 4 weeks. Corneal thickness was measured at nine locations along the horizontal meridian by using optical …