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정상안압녹내장 환자의 망막신경섬유층 두께와 시야와의 상관관계
우성욱,최혁원,김재석,이주화,Sung Wook Woo,Hyuck Won Choi,Jae Suk Kim,Joo Hwa Lee 대한안과학회 2006 대한안과학회지 Vol.47 No.10
Purpose: To determine the correlation between retinal nerve fiber layer (RNFL) thickness and visual field defect for early detection of normal tension glaucoma (NTG). Methods: Sixty eyes newly diagnosed with NTG and 50 normal eyes were analyzed by optical coherence tomography and a short wave length automated perimetry test. The relationship between RNFL, divided into 12 areas, and visual field, divided into 21 areas, were analyzed. Results: Sixty eyes that revealed visual field defect by SWAP showed thinning of the RNFL. OCT sectors 6-o`clock, 7-o`clock, and 8-o`clock (inferior and inferotemporal) and SWAP visual field zones 13, 14, 15 and 16 (superior paracentral, arcuate areas, and the nasal step) were the most frequently damaged. The strongest associations were between the inferior and inferior temporal RNFL sectors 6, 7, and 8-o`clock and the superior nasal/arcuate visual field zones 13, 14, and 15 (R2 range=15.9-34.6%, all p<0.05). Conclusions: A combination of these two methods may be helpful for the early detection of NTG.
우성욱,이동복,Woo Sung-Wook,Lee Dong-Bok 한국재료학회 2004 한국재료학회지 Vol.14 No.6
A Ti47Al1.7W-3.7Zr alloy was oxidized between $900^{\circ}C$ and $1050^{\circ}C$, and the oxide scales formed were studied. The oxide scales consisted primarily of an outer$TiO_2$ layer, an intermediate $Al_2$$O_3$-rich layer, and an inner mixed ($TiO _2$ + $Al_2$$O_3$) layer. Besides $TiO_2$ and $Al_2$$O_3$, oxidation led to the formation of some $Ti_2$AlN and TiN. Both W and Zr were preferentially segregated below the intermediate $Al_2$$O_3$-rich layer. Tungsten in the oxide scale was present as $WO_3$ and ${Ti}_{x}$$W_{1-x}$, whereas zirconium as monoclic-$ZrO_2$ and tetragonal-$ZrO_2$.
우성욱,나영수,김재석,이주화.Sung Wook Woo. M.D.. Young Soo Nah. Jae Suk Kim. M.D.. Joo Hwa Lee. M.D. 대한안과학회 2006 대한안과학회지 Vol.47 No.8
Purpose: To evaluate the changes in corneal sensitivity following cataract surgery with a limbal incision. Methods: The sensitivity threshold was measured in 53 eyes following procedures using a superior limbal incision (42 eyes) or a temporal limbal incision (11 eyes). Results: The corneal sensitivity was significantly lower at the superior and temporal limbal incision sites after surgery than at the other sites (p<0.05). That sensitivity recovered 90% of its preoperative level 30 days post-operative. Conclusions: Corneal sensitivity decreased following cataract surgery using limbal incision. There were no significant differences in either the rate of decrease or recovery of corneal sensitivity according to the incision sites.
우성욱,김재석,이주화,Sung Wook Woo,Jae Suk Kim,Joo Hwa Lee 대한안과학회 2006 대한안과학회지 Vol.47 No.5
Purpose: We report a case of severe thickening of the anterior capsule in a case of hypermature cataract with Down syndrome. Methods: A 30-year-old woman with Down syndrome underwent intracapsular phacoemulsification followed by in-the-bag implantation of an intraocular lens (IOL) under general anesthesia. Pathologic examination was performed. The anterior capsule was then incised at the 12 o`clock position by intraocular scissors because continuous curvilinear capsulorhexis (CCC) was too difficult given the thickened anterior capsule. Intracapsular phacoemulsification was followed by in-the-bag implantation of IOL and the incised anterior capsule was trimmed. Results: Pathologic findings of the extracted anterior capsule documented a thickening of the anterior capsule 20-fold over that of a normal anterior capsule as well as depositions of fibroblasts and collagen materials. Six months after the operation, the patient`s visual acuity was 0.3 and no complication was found.
우성욱(Sung Wook Woo),임채하(Chae Ha Lim),신준우(Jun Woo Shin) 대한검안학회 2009 Annals of optometry and contact lens Vol.8 No.2
목적: 눈물흘림증 진단 중 발견된 선천성 덧눈물점 및 덧눈물길의 임상양상과 이를 눈물주머니조영술로 증명한 증례를 보고하고자 한다. 대상과 방법: 우안 눈물흘림증을 호소하는 78세 여자 환자에 대해 세극등 검사와 눈물주머니조영술을 시행하였다. 결과: 세극등 검사에서 아래눈물점 바로 앞쪽에서 0.3 mm 크기의 덧눈물점을 발견하였다. 눈물주머니조영술상 덧눈물점에서 덧눈물소관을 거쳐 비강까지의 영상이 폐쇄없이 관찰되었고, 덧눈물소관과 정상 아래눈물소관이 합쳐져 공통눈물소관을 통해 눈물주머니로 들어가는 것을 확인할 수 있었다. 결론: 덧눈물점 폐쇄술을 실시한 후 눈물흘림증이 호전되었다. 덧눈물점의 해부학적 상태와 위치에 따라서 여러 가지 다른 증상이 생길 수 있음을 알았다. Purpose: We report a case of congenital accessory punctum and canaliculus in a patient with epiphora by Dacryocystogram. Methods: A 78-year-old female patient visited our hospital for epiphora in right eye. We tested slit-lamp examination and dacryocystogram. Results: An accessory punctum was found in the right eye. Its diameter was 0.3 mm. Dacryocystogram showed that the accessory punctum had an independent canaliculus which was connected to a normal lower canaliculus. Conclusions: After suturing the accessory punctum, the symptom was relieved. Other different symptom can be presented by location of congenital accessory punctum and canaliculus.
나윤수,우성욱,강자헌,주명진,Yoon-Soo Na,Sung-Wook Woo,Ja-Heon Kang,Myung-Jin Joo 대한안과학회 2005 대한안과학회지 Vol.46 No.12
Purpose: To evaluate the prevalence of contamination of imported donor corneas and their preserved solutions, and to characterize the spectrum of contaminating microorganisms. Methods: Thirty-seven imported donor corneas and their preserved solutions imported between December 2003 and June 2005 were included in this study. Results: Five imported donor corneas (13.5%) had positive bacterial cultures, and none had positive fungal or mycobacterial cultures. On the other hand, the preserved solutions did not have positive bacterial, fungal, or mycobacterial cultures. One of the 5 imported donor corneas with positive bacterial culture had a mixed bacterial culture. There were 3 isolates of Staphylococcus epidermidis, 1 isolate of Streptococcus viridans, 1 isolate of Enterobacter cloacae, and 1 isolate of Pseudomonas aeruginosa. Conclusions: The prevalence of contamination of imported donor corneas is low; however, there is a risk of postkeratoplasty infection by contaminated donor corneas. Thus, careful management should be practiced during and after corneal transplant operations.