Analysis of Postoperative Intraocular Pressure Underestimation Measured with Non Contact Tonometry after Corneal Refractive Surgery.
10.3341/jkos.2014.55.2.167
- Author:
Wook Kyum KIM
1
;
Eun Young CHO
;
Hee Sun KIM
;
Hee Kyung LEE
;
Jin Kuk KIM
Author Information
1. B&VIIT Eye Center, Seoul, Korea. kimjinkuk@hanmail.net
- Publication Type:Original Article
- Keywords:
Central corneal thickness;
Intraocular pressure;
LASEK;
LASIK;
Non-contact tonometer
- MeSH:
Humans;
Intraocular Pressure*;
Keratectomy, Subepithelial, Laser-Assisted;
Keratomileusis, Laser In Situ;
Manometry*;
Refractive Surgical Procedures*
- From:Journal of the Korean Ophthalmological Society
2014;55(2):167-172
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To analyze the postoperative intraocular pressure (IOP) underestimation measured with non-contact tonometry after corneal refractive surgery. METHODS: The postoperative IOP decrease measured with non-contact tonometry (NCT), regarded as IOP underestimation, was calculated in 253 LASIK patients and 281 LASEK patients. Multiple regression analysis was performed to determine the preoperative factors which affect postoperative IOP underestimation. The right eye results were reported in this paper. RESULTS: The postoperative IOP decrease was affected by age (r = -0.0420, p = 0.03), corneal ablation depth (r = 0.0466, p < 0.01), and operation method (LASIK or LASEK) (r = 0.6006, p < 0.01). For every 100 microm decrease of corneal thickness by LASIK, the IOP decreased 6.29 +/- 2.40 mm Hg in patients under 26 years of age and 6.12 +/- 2.53 mm Hg in patients above 26 years of age (p = 0.05). For every 100 microm decrease of corneal thickness by LASEK, the IOP decreased 5.77 +/- 2.37 mm Hg in patients under 26 years of age and 5.44 +/- 2.62 mm Hg in patients above 26 years of age (p = 0.05). CONCLUSIONS: The postoperative IOP underestimation measured with NCT was more prominent in younger-aged patients after LASIK than LASEK with deeper ablation depth.
