Winai ChaidaroonNawat Watanachai2011-02-162011-02-162010-01-152010-01-15Chiang Mai Medical Journal; Vol.40 No.4 December 2001 (pages 163 - 223); 163 - 166http://imsear.searo.who.int/handle/123456789/130639Abstract Purpose : To evaluate the change of intraocular pressure (IOP) using Goldmann applanation tonometry (GAT) and to determine the relationship between IOP and the central corneal thickness (CCT) after laser in situ keratomileusis (LASIK).Methods: Data from 65 patients, who had undergone bilateral LASIK, were included in a retrospective study. Three-month follow-up data were reviewed. IOP was measured by GAT preoperatively and 3 months after LASIK. The change from baseline (preoperative) IOP and the correlation between IOP and the central corneal thickness (CCT) were evaluated. Results: At 3 months, the mean IOP decreased, compared to preoperative values. The significant mean change in IOP was 2.14±0.90 mm Hg (range, 0 to 5 mm Hg) (p=0.0001), and the mean reduction of CCT after LASIK was 90.46±30.62 μm (range 25 to 167 μm). There was no correlation between change in CCT (μm) and IOP (mm Hg) (r=-0.09; p=0.334).Conclusion : LASIK lowered IOP measurement by GAT. The reduction in IOP measurement was probably caused by a change in the corneal thickness (central stromal thinning). This decrease may the delay recognition and treatment of future glaucoma that may develop after LASIK for myopia.Chiang Mai Med Bull 2001;40(4):163-166.en-USChiang Mai Medical JournalOriginal Articles