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중심장액맥락망막병증에서 다른 눈의 중심와아래 맥락막 두께
이승현,정혜원,김형찬,Seung Hyen Lee,Hyewon Chung,Hyung Chan Kim 대한안과학회 2012 대한안과학회지 Vol.53 No.7
Purpose: To determine the relationship between subfoveal choroidal thickness of fellow eyes and choroidal vascular hyperpermeability in unilateral central serous chorioretinopathy (CSC). Methods: Thirty patients with unilateral CSC and 28 normal subjects underwent enhanced depth imaging spectral-domain optical coherence tomography to evaluate bilateral subfoveal choroidal thickness. The subfoveal choroidal thickness was measured from the outer RPE border to the inner sclera border. Choroidal vascular hyperpermeability was visualized with indocyanine green angiography (ICGA) and analyzed. Results: The mean subfoveal choroidal thickness in the affected eyes (439.6 ± 136.5 μm) was significantly thicker than that in fellow eyes (340.0 ± 103.3 μm, p = 0.002), and both showed statistically significant difference compared with normal subjects (266.5 ± 111.5 μm, p < 0.001, p = 0.019). The subfoveal choroidal thickness of fellow eyes with choroidal vascular hyperpermeability was 370.0 ± 176.5 μm, which differed significantly (p = 0.037) from the choroid without choroidal vascular hyperpermeability. The choroidal thickness of acute CSC was 441.6 ± 118.6 μm, and that of chronic CSC was 454 ± 166.5 μm, a difference that was not statistically significant (p = 0.676). Conclusions: The subfoveal choroid with hyperpermeability was thicker than that without hyperpermeability on ICGA in the fellow eyes of patients with unilateral CSC. Enhanced depth imaging spectral-domain optical coherence tomography can indirectly evaluate the effects of choroidal hyperpermeability by noninvasively measuring the choroidal thickness. J Korean Ophthalmol Soc 2012;53(7):982-987
중심장액맥락망막병증의 레이저 치료 후 발생한 맥락막신생혈관 4예
이승현,정혜원,김형찬.Seung Hyen Lee. MD. Hyewon Chung. MD. PhD. Hyung Chan Kim. MD. PhD 대한안과학회 2012 대한안과학회지 Vol.53 No.6
Purpose: To report the choroidal neovascularization of 4 patients in central serous chorioretinopathy treated with laser treatment. Case summary: We reported 4 patients with central serous chorioretinopathy. Three patients were treated with focal laser photocoagulation, and 1 patient with photodynamic treatment. All patients newly developed choroidal neovascularization (CNV) after treatment at the area of laser treatment. Three patients received intravitreal anti-VEGF injection and 1 patient received argon laser photocoagulation for the treatment of CNV. After the treatment, the CNV was resolved with improved visual acuity. Conclusions: Laser treatment may be efficacious tool to achieve rapid resolution in central serous chorioretinopathy until now. However, more caution at the time of treatment and close follow-up after treatment are warranted. J Korean Ophthalmol Soc 2012;53(6):886-894
주의력결핍장애(ADD) 아동 및 일반아동의주의력 특성 중 반응속도와 정확성에 관한 연구
이효신 ( Hyo Shin Lee ),신윤희 ( Yun Hee Shin ),윤주연 ( Ju Yeon Yun ),안진웅 ( Jin Ung An ),이승현 ( Seung Hyen Lee ),조정연 ( Jung Yeon Jo ),임난희 ( Nan Hee Im ) 한국정서.행동장애아교육학회(구.한국정서학습장애아교육학회) 2010 정서ㆍ행동장애연구 Vol.26 No.4
본 연구는 주의력결핍장애(ADD) 아동과 일반아동들 간의 멀티미디어를 통한 주의력 특성을 확인하기 위하여 포커스 된 주의력과 지속적인 주의력, 선택적인 주의력을 함께 요하는 멀티미디어 과제를 주고 반응시간과 답에 대한 정확성을 체크하여 주의력의 특성을 알아보고자 하였다. 대상 집단은 대구 및 경상도 소재의 초등학교 고학년 총 9명을 대상으로 ADHD를 선별하여 연구를 진행하였으며 각 데이터는 비모수통계의 Mann-Whitney검정으로 실시하였다. 그 결과 총 반응시간에서는 두 집단 간 차이가 없었으나 과제의 전/중/후반으로 나누었을 때 난이도가 높은 지속적 주의집중과제에서만 차이가 나타났다. 또한 과제의 정확성의 경우에는 난이도가 높은 선택적 주의집중과제에서 차이가 나타났으며 과제의 전/중/후반으로 나누었을 때 과제의 중반에서만 차이가 나타났다. 그러므로 과제의 난이도가 어려워질수록 주의력결핍장애(ADD) 아동들은 일반아동에 비해 과제의 초기에 주의집중이 떨어지고 정확성에 있어서도 평균적으로 과제를 해내지 못함으로 주의력결핍장애(ADD) 아동 중재 시 일반아동과는 다른 과제 수행 정확성을 점검하는 동시에 과제 제시 초기 및 후기에 주의집중을 할 수 있는 중재전략이 제공될 필요가 있다. The purposes of this study were to examine of attention traits (accuracy and response time) of ADD children in Focused attention, Sustained attention and Selective attention in contrast with normal children. The participants were 9 elementary school students who live in Daegu and Gyeongsang-do (5 in ADHD, 4 in Controls). We gave the participants 5 multi-media tasks (1 Focused attention task, 2 Sustained attention tasks, 2 Selective attention tasks). Accuracy and response time (RT) of tasks were assessed by 2 observers using checklist. We analyzed using Mann-Whitney U as non-parametric statistics. The results of this study were as follows. Firstly, the children with ADD showed not significant mean difference from total of response time, but they only showed significant mean difference in the first part of more difficult sustained attention task from controls. Secondly, the children with ADD showed significant mean difference in total of accuracy of selective attention task. Also they have significant difference in the medium part of selective attention task from controls. So, we suggested developing education programs consist of intervention of when they attend on, what kind of task they take for ADD children.
김치열(Chi-Yeol Kim),김성운(Sung-Un Kim),이승현(Seung-Hyen Lee),김경산(Kyung-San KIM) 대한전자공학회 2007 대한전자공학회 학술대회 Vol.2007 No.7
This paper describes the Parrallel Processing System model and performance. The proposed Parallel Processing System will softly be able to change a system configuration after the system is developed.