TITLE:
Repeatability of 3D OCT Pachymetry in Eyes with and without Contact Lens Induced Corneal Swelling
AUTHORS:
Victoria de Juan, Ana B. Cisneros, Raul Martin
KEYWORDS:
Optical Coherence Tomography; Corneal Swelling; Contact Lenses; Corneal Pachymetry
JOURNAL NAME:
Advances in Computed Tomography,
Vol.2 No.2,
June
20,
2013
ABSTRACT: Introduction: Corneal thickness measurement is an indirect assessment of the physiological corneal function in human eye. This value, especially in the central area, is an important data for clinical diagnosis, treatment and monitoring of anterior segment pathologies. There are several technologies for non-invasively measuring corneal thickness like optical coherence tomography (OCT). However, there is little information available describing the effect of contact lens induced corneal swelling in OCT measures. The purpose of this study was to evaluate the repeatability of OCT corneal pachymetry in eyes with and without contact lens induced corneal swelling. Material and Methods: This study included five visits over one week in six healthy subjects: baseline and after sleeping with four different CL of +0.50 D, +2.00 D, +5.00 D and +8.00 D (Acuvue 2, Johnson & Johnson Vision Care) on four different days. Corneal pachymetry OCT 3D (Topcon) were measured three consecutive times during each visit. Besides, this measurement was repeated in 12 meridians (Scans #1 to #12), between 0°and 165°with 15° intervals. Results: Corneal pachymetry was significant different between before and after contact lens wear (p