ArticlesIntraocular Pressure Measurement afterHyperopic LASIKWang, Xiaohong M.D.; Shen, Joanne M.D.; McCulley, James P. M.D.; Bowman, R. Wayne M.D.; Petroll, W. Matthew Ph.D.; Cavanagh, H. Dwight M.D., Ph.D.Author Information From the Department of Ophthalmology, The University of Texas Southwestern Medical Center at Dallas, Dallas, Texas. Accepted March 21, 2002. Address correspondence to: H. Dwight Cavanagh, M.D., Ph.D., Department of Ophthalmology, UT Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, Texas 75390-9057; phone 214-648-8074; Fax 214-648-9061; e-mail [email protected] Supported in part by an unrestricted research grant from Research to Prevent Blindness, Inc., New York, New York. The authors have no financial interest in the products used in this study. CLAO Journal: July 2002 - Volume 28 - Issue 3 - p 136-139 Buy Abstract Purpose. Previous studies have shown that Goldmann applanation tonometry (GAT) underestimates intraocular pressure (IOP) following photorefractive keratometry (PRK) and myopic laser in situ keratomileusis (LASIK). The purpose of this study was to evaluate the reliability of intraocular pressure (IOP) measurements by Goldmann applanation tonometry and pneumotonometry (PT) after hyperopic LASIK. Methods. The IOPs of 20 eyes of 15 patients who underwent hyperopia LASIK were prospectively evaluated. Central and peripheral IOP were measured with GAT and PT, and central and peripheral corneal thicknesses were measured with ultrasonographic pachymetry. Patients were evaluated preoperatively and at 12 months postoperatively. Results. Postoperative GAT measurements of IOP made from the central (13.1 ± 2.7 mm Hg) and peripheral (13.9 ± 3.3 mm Hg) corneal areas were significantly lower (P <0.001) than central IOP measured preoperatively (17.0 ± 2.5 mm Hg). Postoperative PT measurements from the central (17.4 ± 3.2 mm Hg) and peripheral (17.6 ± 2.9 mm Hg) corneal areas were slightly lower than preoperative central IOP (18.4 ± 2.4 mm Hg), but not statistically significant. There were no significant differences between central and peripheral IOP measurements using either method. Conclusion. The data demonstrate that GAT may underestimate IOP measurement, following hyperopic LASIK. © 2002 The Contact Lens Association of Ophthalmologists, Inc.