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김은아,장우혁,박영훈,Eun-Ah Kim,Woo-Hyok Chang,Young-Hoon Park 대한안과학회 2005 대한안과학회지 Vol.46 No.7
Purpose: To analyze the incidence, clinical characteristics and postoperative prognosis of simultaneous bilateral rhegmatogenous retinal detachment (SRD). Methods: We retrospectively analyzed the medical records of 22 patients who visited the Department of Ophthalmology, Yeungnam University College of Medicine, for treatment of SRD and who had been in regular surveillance for at least 6 months. Results: The incidence of SRD was 22 patients among 792 (2.8%). Eleven were male and 11 were female, and the average age was 27.6 years. Eighteen patients (81.8%) complained of visual disturbance and visual field defect of one eye, and myopia of more than -4.00D was noted in 30 eyes (68.2%). The size of the detached area was 2 quadrants in 19 eyes (43.2%). The most common type of retinal break was atrophic hole with lattice degeneration. The most common location of the break was the inferotemporal quadrant. The anatomical success rate of primary operation was 91.9% (34 of 37 eyes). Conclusions: Simultaneous bilateral rhegmatogenous retinal detachment was associated with young age, and myopia. As for the retinal break, the most common type was atrophic hole with lattice degeneration, and the most common location was the inferotemporal quadrant.
정민수,장우혁,Min-Su Chung,Woo-Hyok Chang 대한안과학회 2005 대한안과학회지 Vol.46 No.8
Purpose: To investigate the efficacy of anterior chamber paracentesis in intravitreal triamcinolone acetonide injection (IVTA). Methods: A prospective, randomized clinical trial was conducted on 30 eyes of 30 patients undergoing IVTA. Eyes were randomly divided into two groups, those which had undergone anterior chamber paracentesis (Group 1, 15 eyes) and those which had not (Group 2, 15 eyes). We analyzed postoperative changes in intraocular pressure (IOP) in each group. Results: In group 1, the mean preoperative IOP was 15.33±1.72 mmHg; postoperative IOP at 2 and 15 minutes was 7.80±1.47 and 11.73±1.67 mmHg, respectively. In group 2, there was significant elevation of IOP (46.73±8.26 mmHg) 2 minutes after the injection, although this was reduced to the normal range (16.13±2.61 mmHg) within 15 minutes. Conclusions: Routine anterior chamber paracentesis seems to be inappropriate considering the brief elevation in IOP that immediately follows IVTA.
김재우,장우혁.Jae-Woo Kim. M.D.. Woo-Hyok Chang. M.D. 대한안과학회 2005 대한안과학회지 Vol.46 No.11
Purpose: To analyze the preoperative clinical characteristics, surgical methods, outcomes and visual prognosis of retinal detachment following congenital cataract surgery. Methods: We retrospectively analyzed the medical records of 16 patients (16 eyes) who had undergone an operation for retinal detachment following congenital cataract surgery. Anatomical success was considered to have occurred if the retina was well attached in fundus exam at postoperative 6 months. Results: There were more male (81.3%) patients than female patients. The average age of cataract surgery was 19.3 years, and the mean interval between cataract surgery and retinal detachment was 7.7 years. The most common type of the retinal break was a round hole and the most common location of retinal break was the inferotemporal quadrant. Total retinal detachment was 56.2% and the macula was detached in 87.5% of patients. The anatomical success rate of the primary operation was 43.8% and the final success rate was 87.5%. Postoperative visual acuity increased in 43.8% of patients. Conclusions: Retinal detachment following congenital cataract surgery had a poor success rate compared to that of other retinal detachments due to difficulties in finding the retinal break (37.5%) and frequent total retinal detachment. Early diagnosis, prompt surgery, vitrectomy and intraocular tamponade for primary operation would increase the success rate and improve postoperative visual prognosis.
특발성 황반원공에서 유리체절제술 후 자세에 따른 성적 비교
박재휘,장우혁,사공민,Jae Hwi Park,Woo Hyok Chang,Min Sagong 대한안과학회 2013 대한안과학회지 Vol.54 No.11
Purpose: To compare the anatomical and functional results of vitrectomy for macular hole with and without prone posture. Methods: We retrospectively reviewed the medical records of 71 eyes of 71 patients who received macular hole repair and were followed up for at least 6 months. The anatomical success, complications, and best corrected visual acuity at postoperative 6 months and last follow-up between patients who were advised to take a prone posture for 1 week (group 1) and patients who were advised to simply avoid the supine position right from the surgery (group 2) were analyzed. Subgroup division analysis according to macular hole size and concurrent phacoemulsification was performed. Results: Macular hole closure rate was 91.7% (33 of 36 eyes) in group 1 and 88.6% (31 of 35 eyes) in group 2 (p=0.710). The mean visual acuity at final follow-up increased in both groups by 4.75 ± 3.83 and 4.76 ± 2.96 lines, respectively and revealed no statistically significant difference (p = 0.988). Twenty-seven of 36 eyes (75%) in group 1 and 30 of 35 eyes (85.7%) in group 2 underwent concurrent phacoemulsification, and no difference in macular hole closure rate and visual acuity improvement between the two postures was observed. Conclusions: Favorable anatomical and functional outcomes were achieved without postoperative face-down posturing in the case of phacovitrectomy with wide internal limiting membrane peeling and gas tamponade. J Korean Ophthalmol Soc 2013;54(11):1723-1730
연령관련 황반변성에서 발생한 황반하출혈에 대한 조직플라스미노겐 활성제 및 가스 주입술의 효과
김종호,손준혁,장우혁,Jong Ho Kim,Jun Hyuk Son,Woo Hyok Chang 대한안과학회 2008 대한안과학회지 Vol.49 No.2
`Purpose: To study the results of intravitreal tissue plasminogen activator (tPA) and expansile gas injection for the treatment of submacular hemorrhage in age-related macular degeneration (AMD). Methods: Eleven consecutive patients (11 eyes) with submacular hemorrhage in AMD were included in this study. All patients were treated with intravitreal injections of tPA and C3F8 gas. Postoperatively, patients' follow-up period were at least 3 months. Outcome measures included early and final visual acuity, age, disc areas of hemorrhage, duration of symptoms, displacement of blood from the fovea, and final macular status. Results: The maximum diameter of the hematoma ranged from 2 to 10 disc diameters. The mean duration of submacular hemorrhage was 7.5 days. Submacular blood was completely displaced in 7 patients (64%) and partially in four (36%). Best postoperative visual acuity improved in 7 eyes; in 6 eyes (55%), the improvement was two or more lines. Final visual acuity improved in 7 eyes (64%), remained stable in 2 eyes (18%), and worsened in 2 eyes (18%). Choroidal neovascularization positioned at subfovea in 7 eyes (64%) and juxtafovea in 4 eyes (36%). No significant difference was found between postoperative visual recovery and these factors. Conclusions: Our findings suggest that intravitreal tPA and expansile gas injection are safe and of useful for displacing hemorrhages secondary to age-related macular degeneration. Final visual acuity was limited by the underlying choroidal neovascularization of AMD.`
문성혁,황보성,장우혁,Sung Hyuk Moon,Bo Sung Hwang,Woo Hyok Chang 대한안과학회 2008 대한안과학회지 Vol.49 No.12
Purpose: To describe the clinical course of young patients with central retinal vein occlusion (CRVO). Methods: We reviewed the records of patients 50 years or younger who presented with CRVO and who were followed up for at least 6 months. Results: The average age of the patients was 37.7 years, and the mean follow-up time was 26.3 months. Participants included 27 patients with CRVO younger than 50 years among the total 393 patients with CRVO, and the sex distribution was nearly equal; 13 patients were male and 14 patients were female. Associated systemic diseases were hypertension (8 patients), diabetes (3 patients), stroke (3 patients), and myocardial infarction (1 patient). Of the 17 patients who had no systemic disease, 8 patients had hypercholesterolemia or another hematologic abnormalities. Of the 18 eyes with non-ischemic CRVO, 10 eyes (55.6%) showed improved final visual acuities (2 or more lines). Of the 9 eyes with ischemic CRVO, only 1 eye (11.1%) showed improved visual acuity. Conclusions: Hematological examination and treatment with systemic evaluation were recommended to younger patients with CRVO. The classification of retinal ischemia of young patients as well as that of older patients could be useful for the follow-up of patients and the assessment of its progression in the future.