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Abstract #6096 Published in IGR 2-2
Refractive procedures: LASIK and intraocular pressure in myopic eyes
Hornova J; Sedlak P; Hlouskova BČeska a Slovenska Oftalmologie 2000; 56: 98-103
PURPOSE: To evaluate the effect of central corneal thickness (CCT) on the measurement of intraocular pressure (IOP) in normal myopic eyes before and after LASIK refractive surgery. METHODS: To determine CCT (by ultrasonic pachymeter NIDEC) and IOP (by Goldmann tonometer) in 27 patients (48 myopic eyes from -4 to -14 D) before LASIK (on Chiron Technolas 117) and three months after LASIK surgery. RESULTS: Mean CCT before LASIK was 543.8 μm (480-612), three months after was 430.6 μm (371-511), the difference, 113.2 μm (48-157), is highly significant (p < 0.0001). Similarly, the decrease of mean IOP three months after surgery (about 5.4 mmHg; p < 0.0001) is also significant. After LASIK surgery, the decrease in IOP was 4.8 mmHg/100 μm. CCT is an important factor for accuracy of the Goldmann measurement. Myopic eyes need more attention, especially after photorefractive surgery, when CCT is decreased and therefore Goldmann IOP measurement is permanently underestimated. LA: Czech
Dr. J. Hornova, Ocni klinika FNKV a 3. LF UK, Praha, Czech Republic
Classification:
8.4 Refractive surgical procedures (Part of: 8 Refractive errors in relation to glaucoma)
