Related Experiment Video
Updated: Aug 17, 2026
Corneal Sensitivity Testing Procedure for Ophthalmologic and Optometric Patients
Published on: August 2, 2024
[Changes in corneal sensitivity after excimer laser corneal refractive surgeries]
1Zhongshan Ophthalmic Center, Sun Yat-sen University of Medical Sciences, Guangzhou 510060.
Objective:
To observe and compare the changes in corneal sensitivity after photorefractive keratectomy (PRK) and laser in-situ keratomileusis (LASIK) for myopia.
Methods:
PRK was performed on 387 eyes of 231 patients and LASIK was performed on 796 eyes of 482 patients with myopia. Corneal sensitivity was examined preoperatively and 1 week, 1, 3 and 6 months postoperatively.
Results:
Corneal sensitivity was reduced at the early postoperative stage of both PRK and LASIK. The eyes after PRK showed greater reduction. Corneal sensitivity returned to the baseline levels at 6 months after PRK and 1 month after LASIK.
Conclusion:
The recovery of corneal sensitivity after PRK is slower than that following LASIK.
