Results of LASIK According to Nomogram.
- Author:
Hung Won TCHAH
1
;
Chul Sin MOON
Author Information
1. Department of Ophthalmology, College of Medicine, Ulsan University, Asan Medical Center, Seoul, Korea.
- Publication Type:Original Article
- Keywords:
Laser in situ keratomileusi(LASIK);
Nomogram;
Refraction
- MeSH:
Coloring Agents;
Humans;
Keratomileusis, Laser In Situ*;
Lasers, Excimer;
Nomograms*;
Retrospective Studies
- From:Journal of the Korean Ophthalmological Society
1998;39(10):2241-2246
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
To evaluate the accuracy of the nomogram for LASIK, we retrospectively studied 109 eyes of 81 patients who received LASIK and were followed up for at least 6 months, divided into 3 groups according to the nomogram: the group I include 19 eyed which performed stromal ablation with 85~95% do photorefractive keratectomy(PRK) nomogram, the group II included 60 eyes with 100% of PRK nomogram and the group III included 30 eyes with 105included 30 dyes with 105~110% of PRK nomogram. The Chiron utomated corneal shaper and the Visx 20/20 excimer laser were used in all eyes. Multizone multipass technique was used in all eyes. The mean preoperative spherical equivalent was -12.42D in group I, -11.43D in group II and -11.29D in group III. The mean postoperative spherical equivalent in group I was -0.89D at 1 month, -1.0D at 3 months, -1.64D at 6 months, in group II was -0.31D at 1 month, -0.62D at 3 months, -1.07D at 6 months and in group III was -0.22D at 1 month, -0.46D at 3 months, -0.84D at 6 months. Eleven eyes(58%) were within 1.00D if intended correction at 6 months in group I while 35 eyes(59%) in group II and 20 eyes(67%) in group III were within 1.00D of intended correction at 6 months. Our findings suggest that slight overcorrection is recommanded in LASIK and further study on LASIK nomogram may be required.
