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[Underestimation of intraocular pressure after laser in situ keratomileusis]
A Arimoto1, K Shimizu, N Shoji
1Department of Ophthalmology, Musashino Red Cross Hospital, 1-26-1 Kyounan-cho, Musashino 180-0023, Japan.
Purpose:
We reviewed 115 eyes of 65 patients regarding the intraocular pressure(IOP) following laser in situ keratomileusis(LASIK).
Patients And Methods:
The ages averaged 31.2 +/- 10.5(mean +/- standard deviation) years. The preoperative spherical equivalent averaged -6.85 +/- 2.54 (mean +/- standard deviation) D. A noncontact pneumatic tonometer and Goldmann applanation tonometer were used in measuring the IOP.
Results:
The IOP difference before and after surgery was statistically significant(Mann-Whitney U test). The IOP was significantly corrected with the corrected diopter value, corneal thickness, and corneal curvature(Spearman coefficient by rank).
Conclusion:
The findings show that postoperative IOP may be underestimated due to decreased corneal thickness and curvature. Due attention has to be paid to this feature in evaluating IOP after LASIK.