Intraocular Pressure Changes Following Myopic and Hyperopiclaser in Situ Keratomileusis
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- Category: Vol. 85, December 2017
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Intraocular Pressure Changes Following Myopic and Hyperopiclaser in Situ Keratomileusis, HEBA H. SAYED, AHMED H. EL-KATEB, AHMED HASSANEIN and AHMED ABD EL-BAKI
Abstract
Background: Measuring the IOP after LASIK comprises adiagnostic problem due to the altered cornea] biomechanical properties. This is especially important in the highly myopic patients who are more susceptible to glaucomatous damage. The ocular response analyzer (ORA; Reichert Ophthalmic Instruments; Buffalo, NY) measures the corneal biomechanical response including the Conical Hysteresis (СH) and Conical Resistance Factor (CRF) and correlates such parameters with ІОР.
Aim: To evaluate the changes in both Goldman Intraocular Pressure (IOP G) and Conical Compensated Intraocular Pressure (І0PCC) using the Ocular Response Analyzer (ORA). All patients underwent conventional Laser in situ keratomileusis and evaluation was done pre-operatively and postoperatively at 3, 6 months, regarding: Changes in both ІОР G and 10? CC.
Methodology: This prospective, non-randomized, non-controlled study was conducted on forty eyes of twenty one Egyptian patients.
Results: Results showed statistically significant decrease in the myopic rather than the hyperopic group.
Conclusion: Both ІОР G and ІОР CC decreased significantly after LASIK, with less reduction in the lOP CC as measured by ORA. ІОР CC can provide a more accurate method for ІОР measurement after LASIK.