http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
실리콘기름 안내충전술을 시행받은 다양한 유리체망막질환 환자들의 임상 경과 고찰
성민철,정혜원,이선영,김중곤,윤영희 대한안과학회 2007 대한안과학회지 Vol.48 No.8
Purpose: This study aimed to report anatomic and visual acuity outcomes after 5000-centistoke silicone oil was used as a retinal tamponade for the treatment of various causes of vitreoretinal diseases. Methods: Two hundred ten eyes of 196 patients who had undergone vitrectomy with silicone oil between 1995 and 2004 were reviewed retrospectively. According to etiology, the eyes were divided into five groups : (1) Group 1 included 60 eyes associated with proliferative diabetic retinopathy, (2) Group 2 included 90 eyes associated with proliferative vitreoretinopathy, (3) Grouop 3 included 30 eyes associated with trauma, (4) Group 4 included 13 eyes associated with infection or other inflammatory disease, (5) Group 5 included 17 eyes associated with submacular hemorrhage or etc. Anatomic outcomes included complete retinal attachment and macular attachment. Visual acuity outcomes included ambulatory vision (≥4/200) and preservation of preoperative visual acuity. Results: At the last examination, the retina was completely attached in 98.1% of cases in Group 1, 98.9% Group 2, 82.6% Group 3, 83.3% Group 4 and 100% Group 5. The macula was attached in 98.1%, 98.9%, 87.0%, 100%, and 100% eyes, respectively. Ambulatory vision was achieved in 28 eyes (46.7%) in Group 1, 50 eyes (55.6%) in Group 2, 9 eyes (30.5%) in Group 3, 8 eyes (61.5%) in Group 4, and 6 eyes (35.3%) in Group 5. Conclusions: Vitrectomy with 5000-centistoke silicone oil tamponade is an effective method in the management of vitreoretinal diseases with multiple etiologies.
성민철,김명준,최철영,차흥원,Mincheol Seong,M,D,Myoung Joon Kim,M,D,Chul Young Choi,M,D,Hungwon Tchah,M,D 대한안과학회 2006 대한안과학회지 Vol.47 No.9
Purpose: To compare the clinical results of single-piece hydrophilic acrylic intraocular lenses (IOL) (Akreos AdaptTM, B&L) with those of three-piece hydrophobic acrylic IOL (Sensar?, AMO) after cataract surgery. Methods: This study was a prospective case-control study in which Akreos lenses were implanted for the experimental group and Sensar lenses were implanted for the control group. All surgical procedures were performed by the same surgeon. Best corrected visual acuity (BCVA), change of anterior chamber depth, degree of posterior capsule opacification (PCO), higher-order aberration, and contrast sensitivity (CS) were examined. Measurements were performed by masked examiners prior to the surgery and at 1 week, 1 month, 3 months, and 6 months, postoperatively. Results: There were no statistically significant differences in BCVA, CS or PCO between the two groups. The Refractive error was -0.17±0.67D in the experimental group and -0.02±0.41D in the control group at 6 months, postoperatively. During the first postoperative month, forward movement of both IOLs was detected. Afterward, both IOLs moved backwards until 6 months. Fourth-order spherical aberrations were significantly higher in the Akreos group (p<0.05) at 1 month, 3 months, and 6 months, postoperatively. Conclusions: The clinical results for Akreos IOL and Sensar IOL were similar in most aspects.
성민철,이상화,조남익,Sung, Min-Chul,Lee, Sang-Hwa,Cho, Nam-Ik 한국군사과학기술학회 2007 한국군사과학기술학회지 Vol.10 No.1
In this paper, we propose chain code based decision technique of edge orientation. Edge Information is one of the most important information for handling image signals, and is applied to various civilian and military area, such as image surveillance for military reconnaissance, restoration of noised image signal, fingerprint recognition, and so on. The conventional methods to find edge orientations exploit a certain size of mask which weights for a certain direction, so they showed limitations in the case of diagonal edges except 45 degrees. We find edge orientations using chain code. According to the experiments, the proposed method shows better performance than the conventional approaches. The exact edge orientations including diagonal directions are well found.