advertisement
Abstract #18981 Published in IGR 3-1
Reduction in intraocular pressure after laser in situ keratomileusis (1)
Park HJ; Uhm KB; Hong CJournal of Cataract and Refractive Surgery 2001; 27: 303-309
To investigate whether intraocular pressure (IOP) measured on the nasal side is affected after laser in situ keratomileusis (LASIK) at the Glaucoma Service, Dr. Hong's Eye Clinic, Seoul, Korea. In 83 patients, IOP was prospectively measured with the Goldmann tonometer at the central (Tcenter) and nasal (Tnasal) areas of the cornea before and after LASIK. The Tcenter and Tnasal IOP between baseline and one, three, and six months postoperatively was compared. The correlation between ablation depth, amount of treatment, refractive change, and change in central corneal thickness and Tcenter change was evaluated. Six months after LASIK, Tcenter IOP decreased 3.9 mmHg (25.2%) and Tnasal IOP decreased 2.0 mmHg (12.7%) (p < 0.001, p = 0.02, respectively). The Tnasal measurement was 1.8 mmHg higher than the Tcenter measurement (p < 0.001). Significant correlation between each corneal parameter and the Tcenter reduction at one month did not continue to six months (p > 0.05).At each follow-up, Tnasal IOP was statistically lower than at baseline, although the reduction was not as great as that of Tcenter IOP. A 2-3 mmHg drop in Tnasal up to six months after LASIK should be expected. An alternative would be to measure IOP with the Tono-Pen® on the nasal side to fit the tip to the relatively unchanged nasal side of the cornea.
Dr H.J. Park, Merit Eye Clinic, Seoul, South Korea
Classification:
6.1 Intraocular pressure measurement; factors affecting IOP (Part of: 6 Clinical examination methods)
