Assessment of corneal thickness in soft contact lens users using anterior segment optical coherence tomography

  • Nehal A. Hasan
  • ,Ahmed H. Eldghaimy
  • Mohamed A. Hamed
  • Doaa A. Ahmed
Keywords: cornea contact lens Anterior segment OCT

Abstract

Purpose: The aim was to evaluate the corneal thicknesses of
soft contact lens (SCL) wearers using anterior segment
optical coherence tomography (AS‐OCT).
Method: The epithelial and overall thicknesses of both the
central cornea and the nasal and temporal cornea of SCL
wearers (25 subjects) were obtained by As-OCT and
compared with those of refraction‐matched controls
(25subjects) and patients with emmetropia (25 subjects).
Results: The mean corneal epithelial thicknesses in SCL wearing,
spectacle‐wearing and emmetropic groups were48.13±2.385µm ,
51.915±2.81µm and 53.13±2.105µm , respectively. The
corneal epithelium of members of the SCL group was significantly
thinner than in both the spectacles and emmetropic groups (p = 0.000 and
0.006, respectively), whereas the central corneal thickness in SCL
wearing,spectacle wearing and emmetropic groups were
517.67±21.95µm, 562.525±20.575µm,547.825±26.71µm
respectively.the corneal thickness of SCL group was significantly thinner
than both the spectacles and emmetropic groups.
Conclusions: Contact lens wear is related to thinning of both corneal
thickness and epithelium. AS‐OCT is a non‐invasive and clinically
applicable technique for assessing the involvement of the cornea in
contact lens wearers.

Published
2019-07-01
Section
Articles