Abstract
Purpose: To investigate the impact of laser in situ keratomileusis (LASIK) on the change in pupil size immediately after the procedure.
Methods: In a prospective study, measurement of pupil size was assessed in 70 eyes of 35 consecutive patients using a hand-held pupillometer before and immediately after LASIK in mesopic condition at the refractive eye center, Riyadh, Saudi Arabia.
Results: The pupil showed mild dilation immediate after LASIK. Mean pupil size before LASIK was 4.10 +/- 0.74 and immediate after was 4.74 +/- 0.82, P value < 0.0001. No association was found with age, sex, central corneal thickness or pre-operative refractive measurements (CCT).
Conclusion: There is a change in pupil size that immerses immediately after LASIK; postulations suggested for pupillary dilation include the effect of suction ring, post-operative steroid eye drops, dark room, pain and anxiety. (C) 2010 King Saud University. All rights reserved.