Woo-Jin Sah

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The purpose of this study is to investigate the efficacy of tissue plasminogen activator (tPA) in the treatment of total hyphema following ocular trauma or intraocular surgery. Three patients (3 eyes) representing unresolved total hyphema for more than 5 days and uncontrolled high intraocular pressure received intracameral injections of 10 microgram of(More)
We performed one-step procedures of photorefractive keratectomy (PRK) with the use of the excimer laser (193 nm) on 1519 myopic eyes during 1 year. From this group, we prospectively evaluated visual and refractive results of 202 (13%) consecutive myopic eyes that were followed for more than 1 year. Myopic eyes were divided into two groups according to the(More)
We evaluated the clinical results of excimer laser photorefractive keratectomy (PRK) on 18 myopic eyes of 13 patients with residual myopia after radial keratotomy. Follow up was 24 months or more and the time interval between radial keratotomy and PRK ranged from 12 to 94 months. Patients were divided into two groups for analysis based on their preoperative(More)
PURPOSE To evaluate 20% ethanol toxicity on the rabbit corneal epithelium, ethanol-treated rabbit corneas were examined with electron microscopy. METHODS Rabbit corneas (24 eyes) were treated with 20% ethanol for 30 seconds, 1 minute, and 2 minutes by using LASEK (laser-assisted subepithelial keratectomy) instruments and then washed with sterile water.(More)
PURPOSE To evaluate the long-term stability, complications, and causative factors in eyes that had photorefractive keratectomy (PRK) for myopia. SETTING Kangnam St. Mary's Hospital, Seoul, Korea. METHODS This study evaluated the results of PRK in 201 myopic eyes with a consecutive 5 year follow-up. Preoperative myopia ranged from 2.25 to 12.50 diopters(More)
We evaluated the results of single-step photorefractive keratectomy (PRK) on 35 consecutive myopic eyes (19 patients) with follow up of 3 years or more. The range of preoperative myopia was from -2.00 diopters (D) to -6.00 D with astigmatism of less than 1.50 D. The excimer laser used in this study was the ExciMed UV 200LA, (Summit Technology), which was(More)
The maximum myopic correction with one-step ablation in excimer laser photorefractive keratectomy (PRK) using the ExciMed UV200 LA 193-nanometer excimer laser (Summit Technology, Inc, Waltham, Mass,) is only up to 6.00 D because of a fixed computer program. We performed a simultaneous two-step PRK procedure for nearly full correction on 19 eyes of 19(More)
1. Autokeratoplasty (AKP) has many advantages, such as having no immune reaction, providing easy postoperative care in younger patients, having susceptibility to amblyopia without delay, and demonstrating no vascularization of the autograft. 2. AKP does have its disadvantages, including limitations of patient selection and a high rate of postoperative(More)
We analyzed the data from 1821 patients (2920 eyes) who received photorefractive keratectomy (PRK) to investigate the postoperative complications which cause a significant decrease in visual acuity. A corneal haze of grade 2 or more developed in 9 patients (11 eyes, 0.38%) and corticosteroid-induced ocular hypertension occurred in 3 patients (4 eyes,(More)
Acanthamoeba keratitis is uncommon, but one of the most severe infectious diseases of the cornea. Delayed diagnosis or misdiagnosis as bacterial or herpes simplex keratitis leads to extensive corneal inflammation and profound visual loss. Therefore, accurate and rapid diagnosis of Acanthamoeba keratitis is essential for successful treatment and good(More)