Clinical Evaluation of Three Different Daily Disposable Soft Contact Lens Materials

Wan-Jib Oh,Jeong-Mee Kim,Koon-Ja Lee 대한시과학회 2017 대한시과학회지 Vol.19 No.1

목적: 재질이 다른 하루 교체용 소프트 콘택트렌즈(daily disposable soft contact lens: DDCL)의 자각적 증상, 타각적 증상 및 눈물막을 비교하였다. 방법: 소프트 콘택트렌즈를 착용하고 있는 33명(남: 2명, 여: 31명 ; 평균 21.94±1.58세)을 대상으로 재 질이 다른 세 종류(A;Nesofilcon A, B;Omafilcon A, C;Etafilcon A)의 DDCL을 단일맹검법을 사용하여 하 루 8시간 이상 2주 동안 양안에 착용하도록 하고 콘택트렌즈 피팅상태(중심잡기, 래그, 푸쉬업 검사), 자각 적 증상의 빈도와 정도, 타각증상 및 눈물막 검사 결과를 비교하였다. 결과: 세 종류의 콘택트렌즈 모두 피팅 상태가 적합한 것으로 나타났고, A 렌즈가 다른 렌즈보다 중심이 탈이 적고(p=0.000), 래그(Lag), 푸쉬업(push-up) 움직임이 적었다(p<0.01). 자각적 증상의 빈도(frequency) 와 정도(intensity) 평가에서는 재질에 따른 차이가 없었고, 타각적 증상은 A 렌즈가 다른 렌즈보다 결막충 혈과 염색(staining)이 더 많았고(p<0.05), NIBUT(noninvasive break-up time)와 TBUT(tear break-up time)는 A 렌즈가 다른 렌즈보다 길었다(p=0.000, p=0.008). 결론: 재질이 서로 다른 세 종류의 DDCL 착용 후 재질에 따른 자각적 증상은 차이가 없었고, 눈물막 안 정성과 타각적 증상은 차이가 있었으나 눈물막 안정성, 자각적 증상 및 타각적 증상 사이에 상관성은 확인할 수 없었다. Purpose: To compare the subjective symptoms, objective signs and tear film of three different daily disposable hydrogel contact lenses (DDCL). Methods: Thirty three(male:2, female:31; mean 21.94±1.58 years) subjects who have successfully experienced wearing soft contact lenses were refitted with three different DDCL [A (Nesofilcon A), B (Omafilcon A) and C (Etafilcon A)] randomly assigned to one of three DDCL with a subject-masked method. They were indicated to wear those DDCLs for more than 8 hours a day for two weeks, bilaterally. Assessments including contact lens fitting (centration, lag, push-up test), frequency and intensity of subjective symptoms, objective signs, and tear film test were evaluated and compared after wearing three different DDCLs. Results: The fitting of three different contact lenses were shown optimal, and A lens showed good centration, less movement in lag gaze and push-up test compared to other lenses(p<0.01). The frequency and intensity of the subjective symptoms were not statistically different between the lenses. There was significantly more conjunctival redness and staining observed in eyes wearing the A lens compared with other lenses(p<0.05), NIBUT (noninvasive break-up time) and TBUT (tear break-up time) were longer in eyes wearing the A lens than other lenses(p=0.000, p=0.008, respectively). Conclusion: Whereas subjective symptoms was not different, objective clinical symptoms and tear film stability were different after wearing three DDCLs. However, we could not find significant correlation between tear film, subjective and objective symptoms.

이기종 로그에 대한 통합관리와 IT 컴플라이언스 준수

김완집(Wan Jib, Kim),염흥열(Heung-Youl Youm) 한국정보보호학회 2010 情報保護學會誌 Vol.20 No.5

로그 데이터는 네트워크 및 보안장비, 서버시스템, DBMS, 서비스 등에서 사용자의 행위를 기록하여 보관하며 있으며, 이를 통해 시스템의 안정적인 운영을 지원하거나, 해킹 등의 불법 침해를 당하였을 때 침입경로 추적과 취약점을 찾아내어 보완할 수 있는 중요한 자료이다. 하지만 로그 데이터는 여러 시스템에 각각 다른 형태로 산재하며 일시적인 기간동안 저장되어 있거나, 해커에 의해 고의적으로 삭제되기도 하며, 저장 용량 문제로 인해 필요시에 없을 경우가 많다. 본 연구에서는 네트워크 장비와 보안장비의 표준로그인 syslog와 유닉스/리눅스 시스템과 윈도우즈서버의 로그에 대한 특성을 고찰하였으며, 특히 서비스로그로서 아파치 웹서버와 IIS서버의 로그에 대한 특징을 정리하였다. 여러 종류의 시스템에서 발생되는 로그를 통합하여 관리하기 위해서는 이기종 로그 데이터의 생명주기 방법론을 제시하였다. 또한, 최근에 IT보안 사고에 대응하여 규제준수를 요구하고 있는 국내외의 IT컴플라이언스에서 로그에 대한 관련 내용을 살펴보고, 그 준수할 방안을 제시한다. 결론으로 IT인프라의 보안강화적인 측면과 IT컴플라이언스 준수를 위해, 효율적인 로그에 대한 수집과 보관 및 활용성 측면에서의 이기종의 통합로그관리도입 필요성, 생명주기, 기술적 준비사항, 컴플라이언스 요구사항을 제시한다.

Hoffmann반사를 이용한 선택적 척수 후근 절제술을 위한 근전도 기기와 프로그램의 개발 : 척수 신경근 자극시의 근전도 양상에 대한 연구 A Study on the EMG Patterns Generated by Stimulation of the Spinal Nerve Roots

오창완,권성훈,김희찬,왕규창,김현집 대한신경외과학회 1999 Journal of Korean neurosurgical society Vol.28 No.6

관절을 침범한 전위 종골 골절의 관혈적 정복 및 이종 골이식술을 이용한 치료

김정완,유문집,이성철,유석주,정홍근,김명호,권순행 대한골절학회 1998 대한골절학회지 Vol.11 No.3

The calcaneus is the most frequently fractured tarsal bone. Although there were many reports of treatment using variable methods, but no definite general agreement to the treatment method of the intra-articular calcaneus fracture. From May. 1995 to Apr. 1997, l4 displaced intra-articular fractures of the calcaneus in 12 patients underwent open reduction and heterogenous bone graft (Lubboca, TRANSPHYTO S.A., France) at the Dept. of Orthopaedic Surgery, Dankook University Hospital. The fractures were 13 joint depression type and I tongue type fractures according to the classification of Essex-Lopresti. The average follow-up was 20 months and clinical assessment underwent by Clinical Assessment Rating system of Hutchinson and Huebner; we got a satisfactory results for the treatment of displaced intra-articular calcaneus fracture by open reduction and heterogenous bone graft. We didn' t need harvesting autograft by use of heterogenous bone graft into bone defect site instead of autograft. Our purpose of using heterogenous bone were filling of defect and internal fixation. We used minimal skin incision and minimal internal fixation device, so reduced complications such as wound edge necrosis and peroneal entrapment caused by entensile appraoch. There were no posterior facet depression and decreased B hler angle for 1 year follow up.

청신경초종 수술후 발생한 안면신경 손상의 수술적 치료

오창완,김현집,김동규,한대희 대한신경외과학회 1994 Journal of Korean neurosurgical society Vol.23 No.4

To evaluate the effectiveness of internal anastomosis and facial-hypoglossal anastomosis, the medical records 27 patients with facial nerve injury in the course of operation for acoustic neurinoma were reviewed. In 8 patients, the interrupted facial nerves were anastomosed at the end of tumor operation, and facial-hypoglossal anastomoses were performed in 20 patients. One patient underwent facial-hypoglossal anastomosis 6 months after internal anastomosis. All the patients had been treated from January 1983 to March 1993 and were followed up for more than 1 year. After primary internal anastomoses, 7 patients resulted in symmertric face at rest and only one failed to show improvement of facial muscle tone. The mean time to the first evidence of facial reinnervation was 5.3 months. In 20 patients with facial-hypoglossal anastomosis, improvement of facial muscle tone was demonstrated in 19 patients and in one patient there was no improvement. Thirteen cases(68%) showed facial symmetry at rest and 5 of them could close their eyes completely. The first evidence of reinnervation was noted between 3 and 12 months after anastomosis with a mean of 6.3 months. The anastomoses were performed between 8 days and 22 months after injury of the facial nerve, and the time to reinnervation after anastomosis was significantly influenced by the duration of nerve injury(P=0.0439). Primary internal anastomosis revealed better recovery of facial muscle function compared with facial-hypoglossal anastomosis(P=0.0299).

원위 요골부 불안정 골절의 유형 및 술식에 따른 결과의 비교

김정완,박진영,유문집,정홍근 대한골절학회 1998 대한골절학회지 Vol.11 No.2

In the treatment of an unstable fracture of the distal radius, the anatomical reduction of articular surface and the maintenance of radial length are essential. Recently, more extensive therapeutic method was introduced for reduction and maintenance of distal radius fracture. To compare the results between type C2 and C3 that were treated with pinning and the results between pinning and pinning with external fixation in type C3 according to AO classification, we analysed anatomical and functional results of unstable fracture of the distal radius from June, l994 to september, 1996 at DanKook University Hospital. There were 12 cases of C2 type with pinning, 17 cases of C3 type with pinning and 14 cases C3 type with external fixation and pinning. Among the 43 cases, the most commom type was C3 (31cases), and open fractures were 6 (l4%)cases. The following results were obtained; 1. For comparison of C2 type with C3 type that were treated with pinning, the results of C2 type were better anatomically and functionally. 2. For comparison of percutaneous pinning with percutaneous pinning and external fixation in C3 type, the results of C3 type that were treated by pinning and external fixation were better anatomically and functionally.

뇌 기능해리 현상의 실험적 모델 연구

오창완,김현집,최길수 대한신경외과학회 1989 Journal of Korean neurosurgical society Vol.18 No.1

To demonstrate the effect of diaschisis in acute unilateral cerebral infarction, the changes of regional cerebral and cerebellar blood flow(rCBF) following experimental occlusion of one middle cerebral artery(MCA) were studied in 15 mongrel cats, following occlusion of left MCA by coagulation using transorbital approach, rCBF's of both MCA territories and both cerebellum were measured simultaneously by the hydrogen clearance technique. Sham operation group consisted of 5 cats, in which transorbital exposure of left MCA was performed and then rCBF's were measured in the same manner as the experimental group without cauagulation of left MCA. After measurement of rCBF for 8 hours at fixed intervals, the animals were sacrificed and immediately thereafter 25 ㎖ of 2% triphenyl tetrazolium chloride(TTC) solution was injected through each common carotid artery. The brain was removed and immersed in 10% buffered formalin solution for two weeks, then the coronal plane through optic chiasm was examined for the cerebral infarction. As results, contralateral MCA territory and both cerebellum showed diaschisis after occlusion of left MCA, and contralateral cerebellar rCBF decreased more, showing characteristics of crossed cerebellar as well as interhemispheric diaschisis. Sham operation group showed no infarction, and in experimental group 40.2±1.3% of the coronal plane through the optic chiasm was infarcted, showing high percentage of infarction with small standard deviation.

본 히펠 린다우 증후군에 동반된 다발성, 재발성 혈관아세포종의 수술 체험 2례 : 증례보고 Case Report

황승균,오창완,김현집,최길수,한대희 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.8

Hemangiobalstomas are benign tumors that most commonly occur in the posterior fossa around the 4th ventricle. Recurrent mutifocal hemangioblastomas are often found as a part of a systemic autosomal dominant disease, the Von Hippel-Lindau syndrome. Surgical removal of reccurent multifocal tumors aretechnically more difficult and challenging than solitary ones due to their proximity to critical structures. disturbed anatomical landmark and adehesion to the surrounding tissue. all of which may lead to high postoperative morbidity and mortality. Authors have experienced 2 cases of the multiple and recurrent hemangioblastomas with Von Hippel-Lindau syndrome. The patients of each of the cases underwent surgery for tumor removal at least 2 times. In the first patient, a 42-year-old male, a solitary cerebellar hemangioblastoma had been removed 6 years prior to recurrence. On followup MRI. more than three solid, homogenously enhanced nodules were found in the cerebellum. These tumors were operated on through the previous craniectomy site. but only two of them could be removed. This patient was discharged without additional neurologic deficit. The 2nd patient. a 40-year-old-male. had undergone three prior operations for cerebellar hemangioblastomas. On followup examination, he presented with progessive ataxia and confusion. Brain MRI showed multiple recurrent lesions of homogenously strongenhadced masses in the 4th ventricle and cerebellar vermis surrounded by cystic lesions. accompanied by obstructive hydrocephalus. No additional surgery of tumors were attempted. and only ventriculoperitioneal shunt was performed. He was discharged with improved neurologicla symtomes and sign.

두개인두종의 임상양상 및 수술적 치료성적 : 102례의 분석 Analysis of 102 Cases

백선하,오창완,정영섭,양희진,한대희,조병규,왕규창,정희원,김현집,최길수 대한신경외과학회 1997 Journal of Korean neurosurgical society Vol.26 No.7

신경세포이주장애질환을 가진 간질환자에 대한 수술 체험

황승균,정천기,오창완,이상건,지제근,김현집,한대희,이상복 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.3

Neuronal migration disorders(NMD's) are a rare group of development structural lesions characterized by disorganization of cortical architecture with aberrant columnar and laminar neuronal arrangement, often causing intractable seizures. During September 1994 to February 1995, we operated on six patients with NMD to treat intractable seizures. Male to female ratio of these 6 patients was 2 : 4, and mean age at seizure onset was 14 years old(range 6-28 years), indicating early onset of epilepsy. Mean age at seizure surgery was 29 years old(range 23-41 years), and mean follow-up duration after operation was 4 months(range 3-6 months). In their past medical history, three patients had experienced febrile seizure at pediatric age, and one of them had a history of anoxic damage during delivery. Following preoperative localization, the lesion was removed completely in five patients. In the other one patient, part of the lesion was located in the speech and motor area, leading to partial removal. On histologic examination two of them showed cortical dysplasia and the other four revealed microdysgenesis. During follow-up for six months, five patients were free of seizure and in the other one patient, whose lesion was removed incompletely, the frequency of seizure decreased by 95%.