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Abstract #6694 Published in IGR 4-1
Rational management of applanation tonometry in myopia after LASIK
Lleo Perez A; Alonso Munoz L; Grimaldos Ruiz J; Alcaniz Artolozabal T; Verdu Jaspe C; Aguilar Valenzuela L; Rahhal MSArchivos de la Sociedad Española de Oftalmologia 2001; 76: 363-370
PURPOSE: To determine the accuracy and to identify pitfalls when intraocular pressure (IOP) is measured in myopic patients after laser in situ keratomileusis (LASIK). METHODS: A retrospective study was performed of IOP measured with a Goldmann applanation tonometer in 103 eyes of 52 myopic patients who underwent LASIK. Patients without ocular hypertension or glaucoma were selected. The same surgeon carried out a standard LASIK technique using a microkeratome Chiron Hansatome and the Technolas Chiron 217-C Lasik. IOP was measured preoperatively, and at one, three, and six months postoperatively. RESULTS: After LASIK, a significant decrease was observed in IOP at the postoperative controls, with a mean decrease of 2.69 ± 1.69 mmHg (p < 0.001). This was related with the degree of myopia (p = 0.05) and the characteristics of the excimer laser treatment parameters, such as corneal ablation (p = 0.04). No correlation was observed between this decrease and age or gender. CONCLUSIONS: This retrospective review showed that the postoperative IOP measured after LASIK was lower than preoperatively, which changed the Goldmann tomometer accuracy, thus causing it to underestimate IOP.LA: Spanish
Dr. A. Lleo Perez, Clinica Oftalmologica Rahhal, Valencia, Spain
Classification:
6.1 Intraocular pressure measurement; factors affecting IOP (Part of: 6 Clinical examination methods)
8.4 Refractive surgical procedures (Part of: 8 Refractive errors in relation to glaucoma)
