Cornea thickness after laser refractive surgery is followed up by CUHK Ophthalmology

Cornea thickness after laser refractive surgery is followed up by CUHK Ophthalmology

Laser in situ keratomileusis (LASIK) is the most commonly performed corneal refractive surgery because of a rapid visual recovery and superior safety. A successful LASIK surgery requires precise measurement of corneal topography both before and after the operation. A research team from the Department of Ophthalmology & Visual Sciences successfully employs Optical Coherence Tomography (OCT), an optical analog of ultrasound that enables noninvasive imaging of tissue microstructure, to measure the thickness of cornea after LASIK surgery.

Publishing in the April 2014 issue of a leading international journal Ophthalmology, the corneal thickness of 49 patients (98 eyes) were followed up for one year after LASIK surgery [1]. Only very small changes (less than 5µm) could be noticed in the corneal thickness. The study confirms the feasibility of use of OCT for the measurement of cornea thickness after LASIK surgery.

1. Chan, T.C., et al., Longitudinal evaluation of posterior corneal elevation after laser refractive surgery using swept-source optical coherence tomography. Ophthalmology, 2015. 122(4): p. 687-92.