The Effects of a New Eyeball Fixation Device on the Ablation Surface Profile in Photore fractive Kertectomy.
- Author:
Dong Ho LEE
1
;
Eung Kweon KIM
;
Kyoung Yul SEO
;
Hyun Chae LEE
;
Jae Bum LEE
;
Jung Bum KIM
Author Information
1. Department of Ophthalmology, Ajou University School of Medicine, Korea.
- Publication Type:Original Article
- Keywords:
EK fixation device;
Excimer laser photorefractive keratectomy;
Smoother ablation surface
- MeSH:
Cornea;
Healthy Volunteers;
Lasers, Excimer;
New Zealand;
Wound Healing
- From:Journal of the Korean Ophthalmological Society
2001;42(1):127-136
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The surgical outcome of excimer laser photorefractive keratectomy(PRK) depends on the accuracy of ablation and the smoothness of the surface ablated. The purpose of this study was to investigate the clinical usefulness of a new eyeball fixation device(EK fixation device). First, the PRK was done on the cornea of New Zealand white rabbit (-8 D, 5.5 mm). The surface with the device was smoother compared to that without. Second, The PRK (-4 D, 6 mm)was done on the surface of the contact lens over the cornea of human volunteers. The ablation surface with the device was smoother than that without(0.20+/-0.04 micrometer vs. 0.34 +/-0.14 micrometer, p=0.028). The epithelial healing experiment in New Zealand white rabbit after myopic PRK (-8 D, 5.5 mm)showed more rapid wound healing in the fixation group (66.49+/-0.03 micrometer/hr vs 47.93+/-1.80 micrometer/hr, p=0.0001). In conclusion, the EK fixation device during the PRK procedures creates a smoother ablation surface and enhances corneal epithelial healing, thus may be a useful clinical device.
