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정태선,문형진,유인천,윤경철,Tae Sun Jeong,Hyung Jin Moon,In Chon You,Kyung Chul Yoon 대한안과학회 2007 대한안과학회지 Vol.48 No.12
Purpose: To evaluate the clinical results of corneal triple procedure, as well as the causes and the risk factors for graft failure. Methods: Indications, survival period of graft, causes of graft failure, and risk factors for failure in 29 patients (29 eyes) who had undergone penetrating keratoplasty combined with cataract surgery and intraocular lens (IOL) implantation were retrospectively analyzed. Results: The most common primary indication of corneal triple procedure was bacterial keratitis (24%), followed by corneal trauma, herpes simplex keratitis, and graft failure. The average survival period of corneal graft in corneal triple procedure was 29.2±23.2 months. The most common cause of graft failure was allograft rejection (56.3%). The risk factors of graft failure by an univariate analysis were preoperative unfavorable diagnosis (bullous keratopathy, corneal ulcer, and trauma), corneal neovasculization, intraoperative additional procedure (anterior vitrectomy, synechiolysis, and anterior chamber irrigation), immune rejection, and postoperative glaucoma, but were unrelated to methods of cataract surgery, graft size, or IOL position. In a multivariate analysis, graft rejection and corneal neovascularization were identified as risk factors for graft failure in patients undergoing triple procedure. Conclusions: Corneal graft in corneal triple procedure had various success rates according to the many factors. Risk factors for graft failure included graft rejection and corneal neovascularization.
간헐외사시에서 단안 내직근절제 및 외직근후전술의 수술성공인자
정태선,유인천,박상우,박영걸,Tae Sun Jeong,In Cheon You,Sang Woo Park,Yeoung Geol Park 대한안과학회 2006 대한안과학회지 Vol.47 No.12
Purpose: To investigate the factors associated with surgical success in cases of unilateral medial rectus resection and lateral rectus recession in the intermittent exotropia. Methods: Ninety-eight patients with basic-type intermittent exotropia were included in this study. They underwent unilateral recession of the lateral rectus and resection of the medial rectus muscle and were followed postoperatively for at least one year. Surgical results were analyzed to assess the association with preoperative factors, including the angle of deviation, difference of deviation between near and far, stereoacuity at far using B-VAT?, and Worth 4 dot test (W4DT) at near, and postoperative factors, including the position at near and far at one week, stereoacuity at far using B-VAT? at one year, and W4DT at near and far. Surgical success was defined as esotropia within 5 prism diopters (PD) at near and far or within 10PD at near and far at one year postoperatively. Results: Patients with a preoperative difference of deviation between near and far within 5PD had a better surgical outcome than patients with 6~10PD (p=0.03). There was a statistically significant relationship between position at one week postoperatively (especially esotropia or orthotropia at near and far) and success ratio (p<0.05). Other factors were not statistically related to surgical success (p>0.05). Conclusions: The difference of preoperative deviation between near and far within 5PD and within 5PD esotropia and orthotropia at near and far at one week postoperatively were significantly associated with a good surgical outcome and could be good prognostic indicators.
정태선,박상우,박영걸,Tae Sun Jeong,M,D,Sang Woo Park,M,D,Yeoung Geol Park,M,D 대한안과학회 2007 대한안과학회지 Vol.48 No.5
Purpose: To know the surgical effect and the indication of posterior fixation suture in incomitant strabismus. Methods: From January 2003 to October 2004, posterior fixation sutures were used in five patients with strabismus after orbital wall fracture and in three patients with high AC/A accommodative esotropia. Using Worth 4-dot tests, we compared the amount of incomitant deviation before and after surgery. Results: The mean decrease in deviation after surgery was 7.8±2.6PD(P=0.04) in patients with strabismus after orbital wall fracture, and 11.3±4.2PD in those with high AC/A ratio accomodative esotropia. Conclusions: The posterior fixation suture was effective in reducing the amount of incomitant deviation occurring in cases of strabismus after orbital wall fracture and cases of high AC/A accommodative esotropia.
각막혼탁과 백내장에서 삼중수술과 순차적 수술의 결과 비교
정태선,박영걸,윤경철,Tae Sun Jeong,Yeoung Geol Park,Kyung Chul Yoon 대한안과학회 2006 대한안과학회지 Vol.47 No.5
Purpose: To compare the differences of clinical results between the triple procedure and the sequential procedure in penetrating keratoplasty and cataract patients. Methods: Forty-six patients who had undergone a penetrating keratoplasty and cataract extraction simultaneously or sequentially between January 1998 and January 2004 were investigated retrospectively. The uncorrected visual acuity, best corrected visual acuity, spherical equivalent refractive error, average absolute refractive error, corneal endothelial cell counts, average survival period and survival rate were compared between the two groups. Results: Seven of 25 eyes (28%) in the sequential procedure group and 3 of 23 eyes (13%) in the triple procedure group had 0.2 or better uncorrected visual acuity (p=0.04). The average absolute refractive error was 3.61±2.00 D in the triple procedure group and 2.35±1.83 D in the sequential group (p=0.03). There were no statistically significant differences between the two groups in best corrected visual acuity, spherical equivalent refractive error, endothelial cell count, average survival period, or survival rate at final follow-up. Conclusions: The sequential procedure provides better uncorrected visual acuity and less refractive error. No significant difference was observed in average survival period or survival rate between the triple procedure group and sequential group.
박상우,정태선.Sang Woo Park. M.D.. Tae Sun Jeong. M.D. 대한안과학회 2006 대한안과학회지 Vol.47 No.6
Purpose: To investigate changes in the unoperated eye of patients who underwent unilateral surgery for asymmetrical dissociated vertical deviation. Methods: We performed superior rectus recession and inferior oblique anterior transposition in the case of asymmetrical dissociated vertical deviation, and lateral rectus recession in the case of dissociated horizontal deviation. We excluded patients having a history of previous operation on the vertical rectus muscles, oblique muscle in the unoperated eye, nystagmus, neurologic problems, and imprecise measurement of deviation angle. Changes in the unoperated eyes of 11 patients who underwent unilateral surgery to correct asymmetrical dissociated vertical deviation in the other eye, from May 2003 to April 2004 were analyzed retrospectively at 1 year postoperative. Results: Not all cases of preoperative latent dissociated vertical deviation manifested such deviation in the unoperated eye postoperatively. Conclusions: Unilateral surgery is an effective treatment in patients with asymmetrical dissociated vertical deviation and does not affect the unoperated eye.
XWEET : 웹 환경을 위한 통합 데이타베이스 시스템
정재목(JaeMok Jeong),박상원(Sangwon Park),정태선(Tae-Sun Chung),이병준(Byung-Joon Lee),민경섭(Kyung-Sub Min),이강우(Kang-Woo Lee),김형주(Hyoung-Joo Kim) 한국정보과학회 2001 정보과학회논문지 : 데이타베이스 Vol.28 No.2
XML은 Web 에서 운영되는 모든 데이타 표현에 대한 표준이다. 여러 웹 소스들로부터 이질적인 데이타를 XML 데이타로 통합할 수 있다. 많은 연구자들이 XML처리에 대한 연구를 해 왔다. 이러한 연구의 집합체로서, 우리는 XML 데이타의 효율적인 저장, 추출, 질의, 웹 환경에서의 응용을 위한 기반 시스템인 XWEET1)를 제안, 구현하였다. XWEET는 XML 데이타의 표현을 위해 XDM이라는 데이타 모델을 사용하였으며, XML 데이타의 저장을 위해 PDM을, 이질적인 정보 소스로부터의 데이타 통합을 위해 Wrapper와 XWS를, 서로 다른 XML 문서 형식의 통합된 표현을 위해 XSI를 제공한다. 이렇게 통합, 저장된 데이타는 XML/QL 형식의 질의를 통해 접근되며, XQP는 제공되는 질의를 처리한다. 또한, 사용자들은 웹 환경에서 수행되는 응용을 작성할 수 있는 기반을 제공받는다. WPG와 HTML/XML Template는 웹 응용의 수행 결과를 정의된 HTML이나 XML로 생성하도록 해 주며, WebTP는 웹기반 워크플로우를 위한 기반 기능을 제공한다. XML is a standard representation format for data operated in web environment. We can integrate the heterogeneous data from several web sources into XML data. Many researchers have been working on XML processing. As a conglomerate of those works, we proposed and implemented the XWEET system. In this system, we store, extract and query XML data. XWEET has several interesting modules: XDM(XWEET data model) for representing XML data, PDM(persistent data manager), wrapper, XSI(XWEET semantic integrator), and XQP(XWEET query processor). Also, it supports an environment for generating web applications; WPG(a html/xml result generation module) and WebTP(a web-based workflow system).