• JOURNAL OF ELECTRICAL WORLD
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• no.6 s.90
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• pp.88-92
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• 1984

OA화시대의 도래로 인해 OA 기기가 보다 많이 도입되는 경향에 있다. 이러한 경향과 함께 CRT작업에 종사하는 작업자는 호조건하에서의 작업이 기대되고 있다. SRT(브라운관)작업은 눈의 피로의 원인이 되는 요소가 여러 가지 있으나 그 전부를 조명으로 해결할 수는 없으며 보다 피로가 적은 쾌적한 조명환경을 얻기위한 방법에 대해 생각해 보기로 한다.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.1897-1898
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• 2008

본 논문에서는 비젼을 이용한 영상처리 기술을 기반으로 운전자의 피로도를 측정하여 졸음운전을 감지하여 경고하는 실시간 시스템을 제안한다. 제안된 시스템은 얼굴 영상 분석과 퍼지 이론을 이용하여 운전자의 졸음 또는 부주의함을 감지하여 경고함으로서 교통사고를 미연에 방지하는 시스템이다. 본 논문에서는 실시간 얼굴 탐색 알고리즘 개발을 위해 퍼지 색상 필터와 가상 얼굴 모형을 이용하여 얼굴위치 및 눈 영역을 보다 빠르게 검출하고, 눈 깜박임의 빈도수(Eye blinking frequency)와 눈의 닫힘 지속 기간(Eye closure duration)을 측정하는 방법은 제안한다. 그 다음, 측정된 데이터를 기반으로 퍼지논리를 사용하여 운전자의 피로도를 결정하고 졸음운전 여부를 감지 및 판단하는 방법을 제안한다. 마지막으로, 제안된 방법은 여러 실험을 통해 운전자의 졸음운전 감지 능력의 우수성을 증명한다.

• Journal of the Korean Institute of Intelligent Systems
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• v.18 no.2
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• pp.223-229
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• 2008

In this paper. we propose the real-time vision system which judges drowsiness driving based on levels of drivers' fatigue. The proposed system is to prevent traffic accidents by warning the drowsiness and carelessness using face-image analysis and fuzzy logic algorithm. We find the face position and eye areas by using fuzzy skin filter and virtual face model in order to develop the real-time face detection algorithm, and we measure the eye blinking frequency and eye closure duration by using their informations. And then we propose the method for estimating the levels of drivel's fatigue based on measured data by using the fuzzy logic and for deciding whether drowsiness driving is or not. Finally, we show the effectiveness and feasibility of the proposed method through some experiments.

• Journal of Korean Ophthalmic Optics Society
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• v.14 no.2
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• pp.9-14
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• 2009

Purpose: The purpose of this study was to examine the relationship between the accommodative facility, blink rate and accommodative lag according to the change of angles of main viewpoint of near distance worker and study an appropriate viewing angle that mitigates asthenopia, such as headaches or eye fatigue accompanied when reading and staring at the computer or TV for a long time. Methods: Total of 27 people including 12 male university students and 15 female university students in the age of 20 to 36 with frequent near distance works, such as computers, were selected to study the accommodative facility, the blink rate and the accommodative lag in accordance with the change of viewing angles of the near distance workers. The refraction error was corrected completely and the phoropter was shifted to near distance mode to locate the near distance indication at 40 cm. The accommodative facility and the blink rate were measured for one minute at each viewing direction of $40^{\circ}$ downward, $20^{\circ}$ downward, horizontal, and $20^{\circ}$ upward directions based on the horizontal line and the accommodative lag was measured in dynamic retinoscopy using retinoscope. Results: As a result, when the main viewpoint was moved on upper direction from the $40^{\circ}$ below, the accommodative facility was reduced and the blink rate and the accommodative lag were increased so their eyes became dry and the accommodation response was reduced. Conclusions: In near distance works, the eye fatigue level can be minimized by locating a book or a computer screen $40^{\circ}$ below than the horizontal direction.

• The Journal of the Convergence on Culture Technology
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• v.8 no.2
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• pp.187-195
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• 2022

This study was conducted to confirm the relationship between smart device usage time, eye health status, and eye management consciousness during the COVID-19 Pandemic period for college students in the health field. The study participants were 188 health-related university students, and data analysis was performed using descriptive statistics, independent t-test, Chi-square test, one-way ANOVA, and Pearson's correlation coefficients using the SPSS 26.0 program. As a result of the study, the average of the subjects' eye fatigue score was 15.23±13.71, the dry eye subjective symptom score was 21.87±12.02, and the eye health management consciousness score was 3.48±1.09. Eye care awareness, dry eye symptoms (r=.152, p=.005) and eye fatigue, dry eye symptoms (r=.650, p<.001) were statistically significant positive correlation in the group using smartphones for 2 hours or more per day on average. Based on the results of this study, it is necessary to find a way to prevent eye health due to the use of smart devices by college students, and repeated studies are needed to confirm the factors affecting eye health.

• Proceedings of the Korean Information Science Society Conference
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• 2003.04c
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• pp.636-638
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• 2003

현재 장애인의 삶의 질을 향상시키고자 노력의 하나로서 장애인을 위한 다양한 정보통신기기들이 개발되고 있다. 그 중에서 지체장애인을 위한 가상자판(virtual keyboard)은 눈동자의 방향에 따라 글자를 입력하는 장치이다. 현재 만들어지는 가상자판은 눈의 피로를 고려하지 않아서 실생활에서 사용하기에 어려운 점이 많다. 본 논문은 이러한 문제점을 해결하기 위하여 유전 알고리즘(genetic algorithms)을 이용하여 가상자판의 배열을 최적화하는 방법을 제시한다. 실험 결과는 피로도, 이동거리, 글쇠 누르는 횟수에 있어서 전반적으로 좋은 성능을 보이고 있다.

• Journal of Korean Ophthalmic Optics Society
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• v.14 no.4
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• pp.65-69
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• 2009

Purpose: Recently incidence of VDT syndrome has gradually increased as extensive use of computers. VDT syndrome reported by VDT workers include musculoskeletal disorder, neuropsychiatric disoders and eye symptoms such as eye strain, tired eyes, irritation and blurred vision. The environmental factors of VDT syndrome include electromagnetic waves, size, brightness and lighting of computer screen, height of a monitor and a worktable, working hours, kind of task, distance between screen and workers, indoor humidity and temperature, indoor air contamination and ventilation. In this study, we investigated the environmental factors related to body symptoms and health effects included in VDT syndrome. Methods: Study subjects were total 120 persons (54 male, 66 female) with age from 19 to 28. We surveyed the body symptoms and physical discomfort when doing an activity in a short distance such as reading book or paper, computer work. The questionnaire included main body symptoms, self-consciousness symptoms of eye, satisfaction of working environment, pain of the wrist when using keyboard and mouse. Results: Most of people (70%) felt physical pain from long time work of computer, paper, electrical apparatus. They mainly complained pain of neck and low back (57.1%), eye (45.2%) and head (31%). With the environmental factors, 78.3% of the subjects complaint pain of eye from inappropriate illumination. Most of the symptoms included 'eye fatigue'(38.3%), 'dryness of eye'(31.9%) and 'blurred vision'(23.7%). Subjects in this study complained discomfort of their chairs and most of them experienced pain in the wrist when using keyboard or mouse. Conclusions: When people use electrical apparatus or work with paper, people would get their eye fatigue and feeling of physical fatigue because of not harmonizing various environmental factors such as light, space, posture, worktable with theirselves. Therefore, workers should develop preventive method such as self-control of adequate break time to avoid fatigue while VDT work. Work environment should be changed to ergonomic design for optimal visual environment to prevent musculoskeletal disorder through constant research.

• 건강소식
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• v.33 no.12
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• pp.12-13
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• 2009

대부분의 직장인은 일터에서 의자에 앉아 하루 종일 모니터와 씨름을 벌인다. 한정되고 혼탁한 공간에서 혹사당하다보니 몸 이곳저곳에서 이상신호를 보내는 건 어찌 보면 당연한 일. 그 중에서도 직장인을 가장 괴롭히는 것 중의 하나가 바로 눈의 피로다. 오염된 실내공기에서 각종 전자파에 이르기까지 일터에서 혹사당하고 있는 뻑뻑하고 따가운 눈. 어떻게 해야할까.

• 월간산업보건
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• s.22
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• pp.38-40
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• 1990

• 건강소식
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• v.34 no.8
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• pp.16-17
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• 2010

현대인들은 매일매일 반복된 나날을 보낸다. 일을 하다보면 몸은 천근만근이고 어느새 또 하루가 저문다. 그렇게 일상에서의 스트레스와 피로를 쌓아가 결국에는 아침이 와도 눈을 뜨고 자리에서 일어나는게 힘들어진다. 풀리지 않는 피로, 어떻게 하면 좋아질 수 있을까 하고 영양제도 챙겨 먹어 보지만 기대만큼 쉽게 달라지지 않는다. 만성피로, 과연 무엇이 문제일까?