범혈구감소증을 동반한 폐결핵 환자의 광범위한 단순포진 각막염 2예

주락현(Lock Hyun Ju),최헌진(Hun Jin Choi),장지웅(Ji Woong Chang),이도형(Doh Lee),김진형(Jin Hyoung Kim) 대한검안학회 2015 Annals of optometry and contact lens Vol.14 No.3

Purpose: This paper describes unusual simultaneous manifestation of multiple types of herpetic infectious epithelial keratitis in pulmonary tuberculosis patients. Case Summary: Two pulmonary tuberculosis patients; a 49-year-old male and an 82-year-old male, was referred to our clinic. The patients simultaneously presented all types of HSV keratitis including marginal ulcers surrounding the entire perilimbal area, geographic ulcers and dendritic ulcers―despite only mild symptoms such as irritation or foreign body sensation and a relatively short disease course. They were treated by antiviral agent, than showed good prognosis. Conclusions: Our findings suggest that neurotoxicity from anti-tuberculosis drugs specifically or a suppressed immune system associated with tuberculous infection itself may affect the perilimbal Herpes Simplex Virus reactivation, leaving a tuberculosis patient particularly vulnerable to herpetic keratitis.

철도사고의 인적오류 분석을 위한 수행도 영향인자 분류

백동현(Dong-Hyun Baek),구락조(Lock-Jo Koo),이경선(Kyung-Sun Lee),김동산(Dongsan Kim),신민주(Min-Ju Shin),윤완철(Wan Chul Yoon),정명철(Myung-Chul Jung) 한국산업경영시스템학회 2008 한국산업경영시스템학회지 Vol.31 No.1

  Enhanced machine reliability has dramatically reduced the rate and number of railway accidents but for further reduction human error should be considered together that accounts for about 20% of the accidents. Therefore, the objective of this study was to suggest a new taxonomy of performance shaping factors (PSFs) that could be utilized to identify the causes of a human error associated with railway accidents. Four categories of human factor, task factor, environment factor, and organization factor and 14 sub-categories of physical state, psychological state, knowledge/experience/ability, information/communication, regulation/procedure, specific character of task, infrastructure, device/MMI, working environment, external environment, education, direction/management, system/atmosphere, and welfare/opportunity along with 131 specific factors was suggested by carefully reviewing 8 representative published taxonomy of Casualty Analysis Methodology for Maritime Operations (CASMET), Cognitive Reliability and Error Analysis Method (CREAM), Human Factors Analysis and Classification System (HFACS), Integrated Safety Investigation Methodology (ISIM), Korea-Human Performance Enhancement System (K-HPES), Rail safety and Standards Board (RSSB), TapRoot<SUP>?</SUP>, and Technique for Retrospective and Predictive Analysis of Cognitive Errors (TRACEr). Then these were applied to the case of the railway accident occurred between Komo and Kyungsan stations in 2003 for verification. Both cause decision chart and why-because tree were developed and modified to aid the analyst to find causal factors from the suggested taxonomy. The taxonomy was well suited so that eight causes were found to explain the driver"s error in the accident. The taxonomy of PSFs suggested in this study could cover from latent factors to direct causes of human errors related with railway accidents with systematic categorization.

노안에서 조절미세파동의 고 진동수 영역 및 조절래그와 조절력의 관계

주락현,이동호,이도형,김진형,Lock Hyun Ju,MD,Dong Ho Lee,MD,Do Hyung Lee,MD,PhD,Jin Hyoung Kim,MD,PhD 대한안과학회 2014 대한안과학회지 Vol.55 No.11

Purpose: To determine the relationship between the high-frequency component of accommodative microfluctuation (HFC) and accommodative lag in presbyopic eyes and how they affect the subjective accommodation power with other ophthalmic factors, such as pupil diameter and corneal multifocality. Methods: Forty subjects (80 eyes) were included in this study, and the non-corrected distance and near visual acuity was measured and then converted to log MAR vision. The addition power for 33 cm near visual work was also measured and the accommodative power was measured by the push-up method. The HFC, accommodative lag and pupil size according to accommodative stimuli (-1.0 to -3.0 D) was measured by Speedy-i Autorefractor (Right Mfg Co., Tokyo). The corneal multifocality and corneal astigmatism was measured by corneal topography (TMS-4; Tomey, Erlangen, Germany). Results: The mean age was 60.0 ± 4.66 years (51-68) and there were 23 male and 17 female subjects (1.35:1). The HFC and pupil size showed no significant change according to accommodation demand, however, the accommodative lag showed a statistically significant increase (<EM>p</EM> < 0.001 by one-way ANOVA). Accommodative lag (-2.0 D) showed a statistically significant negative correlation with the subjective accommodative power, and the pupil size (0 D) showed a positive correlation with the subjective accommodative power. Conclusions: In presbyopia patients, the objective accommodative lag and initial pupil size showed a statistically significant relationship with subjective accommodative power. On the other hand, HFC, pupil size and corneal multifocality, alone may not be indicators to predict accommodative power, but these are important components to explain the dynamic aspect of accommodation. J Korean Ophthalmol Soc 2014;55(11):1606-1612

Successful Treatment with Comb-ined PTK/PRK Guided by Intraop-erative Skiascopy of Patients with Corneal Haze after Surface Ablation

( Hun Jin Choi ),( Lock Hyun Ju ),( Jin Hyoung Kim ),( Suk Kyue Choi ),( Do Hyung Lee ) 대한안과학회 2015 Korean Journal of Ophthalmology Vol.29 No.1

윗눈꺼풀 성형술로 치료한 특발성 윗눈꺼풀 부종 환자 1예

최승권,주락현,염정훈,Seung Kwon Choi,Lock Hyun Ju,Jung Hoon Yum 대한안과학회 2015 대한안과학회지 Vol.56 No.1

Purpose: To report a case of idiopathic upper eyelid swelling with minimal response to steroid treatment treated by upper eyelid blepharoplasty. Case summary: A 69-year-old man with diabetes mellitus and smoking history, presented upper eyelid swelling in both eyes starting 5 years ago. The patient had been receiving systemic steroid treatment for idiopathic upper eyelid swelling, though each attempt to taper steroid treatment led to recurrence of eyelid swelling. In the initial examination, both upper eyelids showed swelling. For differential diagnosis, a work-up including laboratory test and computerized tomography (CT) scan of the orbit were initiated. There were no abnormalities on laboratory tests including the thyroid function test. A CT scan of the orbit was unremarkable. For managing symptoms and inflammation, smoking was stopped and steroid treatment was administered. The patient still, however, complained of discomfort and swelling. To relieve symptoms and debulk inflammatory tissue, bilateral upper eyelid blepharoplasty was performed. The patient experienced reduced discomfort after the surgery. The biopsy showed no abnormalities, except for mild inflammation. Conclusions: We present a case of idiopathic upper eyelid swelling despite steroid treatment. In this case, upper eyelid blepharoplasty was used with excellent functional and cosmetic outcomes. Thus, suspension of steroid treatment in cases of patients with recurrent eyelid swelling, in spite of steroid treatment, should be considered. J Korean Ophthalmol Soc 2015;56(1):119-123

망막분지정맥폐쇄에 합병된 황반부종에서 유리체강내 베바시주맙 주입 후 발생한 혈소판감소 1예

이수한,주락현,염정훈,김진형,이도형,이종현,Soo Han Lee,MD,Lock Hyun Ju,MD,Jung Hoon Yum,MD,Jin Hyoung Kim,MD,PhD,Doh Hyung Lee,MD,PhD,Jong Hyun Lee,MD,PhD 대한안과학회 2013 대한안과학회지 Vol.54 No.11

Purpose: To report a rare case of thrombocytopenia after intravitreal bevacizumab injection (IVBI) in a patient with macular edema secondary to branch retinal vein occlusion (BRVO). Case summary: A 52-year-old female presented to our clinic with complaints of visual disturbance in her right eye for 2 months. She was receiving hemodialysis therapy 3 times a week for 4 years due to chronic renal failure. Unilateral macular edema secondary to BRVO was observed on fundus examination and was confirmed with optical coherence tomography (OCT). The first IVBI was performed, and an additional injection was given 4 weeks later. Four weeks after the second injection, thrombocytopenia was present. The patient was followed up in our clinic without IVBI for 8 weeks and the platelet count recovered. Thrombocytopenia was reconfirmed after 2 additional monthly injections. After she revisited our clinic without IVBI for 8 weeks, the platelet count recovered without any treatment. Conclusions: When a patient presents with thrombocytopenia after IVBI with macular edema in BRVO, thrombocytopenia due to IVBI should be considered as a possible diagnosis. J Korean Ophthalmol Soc 2013;54(11):1788-1793