• Title/Summary/Keyword: Eye condition

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Long-term follow-up of optic neuritis associated with meningoencephalitis of unknown etiology in a Maltese dog

  • Jung, Sun-Jun;Kim, Jury;Plummer, Caryn E;Lee, Ki-Chang;Kim, Min-Su
    • Korean Journal of Veterinary Research
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    • v.59 no.2
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    • pp.113-117
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    • 2019
  • A 6-year-old intact male Maltese dog presented with a history of blindness and ataxia. Neuro-ophthalmic examination revealed dilated pupils with absent pupillary light reflexes and menace response in both eyes. Mild peripapillary edema was noted in the fundus of the right eye. After magnetic resonance imaging, the dog was provisionally diagnosed with meningoencephalitis of unknown etiology. Follow-up funduscopy was performed to monitor the condition of the optic discs for three years. Despite of the treatment with prednisolone, the optic nerve progressed to atrophy and the dog couldn't restore vision.

Comprehensive Korean Medicine Treatment for Benign Essential Blepharospasm in a Patient Responding Poorly to Botulinum Toxin Treatment

  • Ha, Seojung;Kim, Sung A;Lee, Suji;Choi, Sungwoon;Lee, Sanghoon
    • Journal of Acupuncture Research
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    • v.39 no.1
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    • pp.49-52
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    • 2022
  • Benign essential blepharospasm (BEB) is a condition/disease which involves involuntary muscle contractions causing the eye to repetitively close, making it impossible for the patient to perform daily activities. This study reports Korean medicine treatment of a rare case BEB in a 34-year-old male patient whose symptoms showed minimal improvement following botulinum toxin injection (the standard treatment). Acupuncture, pharmacopuncture, and herbal medicine treatment for 11 days resulted in clinical improvement for all symptoms as assessed by using the Jankovic Rating Scale, Blepharospasm Disability Index, numerical rating scale, duration of spasms lasting more than 1 hour per day, and number of spasms lasting less than 1 minute per day. This case report suggests that comprehensive Korean medicine treatment could be a treatment option for BEB in patients who do not respond well to botulinum toxin injection.

Visible Light Wireless Communication Link Using LEDs (LED를 이용한 가시광 무선 통신 링크)

  • Son, Yong-Hwan;An, Sung-Chan;Kim, Hyun-Seung;Won, Yong-Yuk;Han, Sang-Kook
    • Journal of IKEEE
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    • v.13 no.4
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    • pp.70-74
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    • 2009
  • In this paper, We propose the visible light communication(VLC) link based on white light emitting diode (LED) and Photo detector(PD). The proposed architecture is demonstrated experimentally and its performance is verified through the experimental results of quality-factor(Q-factor) and eye pattern of 10Mb/s PRBS signal. The ambient light effect from a typical type fluorescent lamp source was also analyzed. when the distance between the LED and the PD is about 1m, error free wireless transmission of the LED was achieved up to 10Mb/s data rate. Under the condition with ambient light, low BER, data transmission of the VLC link is achieved up to 5Mb/s data rate at 1m. Also, when the PD is placed away from the center, low BER data transmission of the VLC link is achieved up to 1Mb/s at 10cm and 10Mb/s at 5cm.

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A Sbjective Symptom on Outdoor Air Quality in Dental Hygienist (대기오염에 의한 치과위생사의 자각증상 특성)

  • Ji, Dong-Ha;Choi, Mi-Suk;Son, Bu-Soon
    • Journal of environmental and Sanitary engineering
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    • v.22 no.2
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    • pp.1-8
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    • 2007
  • This research is based on self-filling survey which 656 dental hygienists who work in, seoul, the metropolitan area, jeon-buk area participated on July 2006 through August 2006. This survey was analyzed the relationship between the subjective symptoms(6 types) and outdoor air quality($O_3,\;NO_2,\;CO,\;SO_2,\;PM_{10}$) As follows analyzed results. The health condition of dental hygienists were "Feel Good" more than 50% in last month. The experience the symptoms level is higher then non-experience level in "Dry eye, itch, smarting", "Headaches", "Fatigue and sleepiness", "Red eye", "Hypersensitivity", "Dorsalgia, omarthralgia, cervicodynia". We anticipated that the more experience the subjective symptom the more likely it is that outdoor air quality will be high rate level. But we could not find the uniformity in metropolitan-area and seoul-area. In the case of jeonbuk area, the group's pollution density levels which experienced the subjective symptom were appeared high rate than inexperienced group except $SO_2$. It probably comes from sensibility for an air pollution in this area. Dental hygienists who work in jeonbuk area have an unusual sensibility for an air pollution because outdoor air quality of jeonbuk area was rule good rather than others area. especially $SO_2$ was revealed out even though low rate level in inexperienced group it is that the number of cars in jeonbuk area is increasing rapidly.

The Gender Observation Time Characteristics from Sight Fixation and the Leap of Pupil Index (시선의 고정과 도약 동공지표에 나타난 성별 주시시간 특성)

  • Lee, Jeong Ho;Kim, Jong-Ha
    • Korean Institute of Interior Design Journal
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    • v.27 no.1
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    • pp.29-38
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    • 2018
  • This research is to analyze the change of pupil size in gender through the eye-tracking experiment in large complex cultural space. It is meaningful that figured out the common characteristics and differences from gender observation characteristics. Through this research, the analyzed results of the observation time measurement that appeared from the fixation and saccades pupil indicator able to define as follows. Firstly, it was suggested that there were differences between each gender and participants through extract pupil size that can be the standard examples for the case from male and female and the process of extracting the relative pupil size change on the hourly range. From the specific time range, it was possible to indicate bending characteristics and reversal phenomena of Fixation and Saccades. Second, the result was found equally from both male and female group that the rapid increment of pupil size at initial time range immediately after the eye-tracking experiment has been initiated. This can be considered to actively accepting the stress given by the subject through the extended pupil after 10 seconds that compare to indicated very low pupil size between 0 to 10 seconds after starting the experiment. Third, meanwhile 0 to 10 seconds after initial observation are the time of sudden change in the pupil size, therefore these time range data cannot be regarded as observed in the appropriate condition. Thus, it able to define the highest times of emotional processing for male as 10 to 80 seconds, and for female as 10 to 70 seconds. There was no definition of the time range data for observation experiment from previous research, this data can be considered to stable time to observation through the pupil extension. Therefore, it is possible to set suitable time of observation experiment to be around 70 to 80 seconds exclude initial experiment time.

Comparison on the Driver Characteristics and Subjective Workload according to the Road Direction Change using Driving Simulator (도로주행방향 변화에 따른 운전 특성 및 주관적 부하의 운전 시뮬레이터 기반 비교 평가)

  • Jeon, Yong-Wook;Daimon, Tatsuru;Kawashima, Hironao;Kwon, Kyu-Sik
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.32 no.1
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    • pp.26-33
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    • 2009
  • The directions of the road are divided into two, the right-hand side and left-hand side of the road, by the convention and specific native method in the world. This paper deals with the characteristics and behaviors of drivers who are accustomed to driving on right-hand side of the road, drive with a handle on the left-hand side, and comparing with left-hand side drivers. The driver's eye movements were measured by eye camera and questionnaires were used for measuring subjective evaluation such as driving mental workload. The experimental results indicated even if the experts who had much experience on right-hand side driving, they had lower driving skill than novice driver, accustomed to driving on left-hand side. In terms of mental workload, MCH rating scale and MNASA-TLX, the right-hand side drivers were in lower stress condition than the left-hand side drivers because of having much driving experience. However, they conducted a few mistakes by confusing the position of turn signal and windshield wiper because of their driving habit or traits and it lead to operation mistakes. These results can be applied effectively to develop the driving support information with changed environments.

Literature study on autumn-dryness syndrome (추조(秋燥)에 관(關)한 문헌적(文獻的) 고찰(考察))

  • Han, Jae-Soo;Kwon, Hyuk-Sung;Lee, Joo-Hee;Jung, Sung-Ki;Lee, Hyung-Goo
    • The Journal of Korean Medicine
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    • v.15 no.2 s.28
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    • pp.321-333
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    • 1994
  • 1. Autum-dryness syndrome(秋燥) is caused by dry-warm or dry=-cool weather condition when lower-warmer Eumfen(下焦陰分) was injured by jung hyoul hatal(精血下脫) or taking medicines of dryness in autumn. 2. The symptoms of autum-dryness syndrome are headach, fever, chilling, anhydrosis, dry cough, tinnitis, dry lip, dry skin, chest discomfort in cool-dryness syndrome(凉燥) and headach, fever, dry cough, paroxymal cough, dry skin, chest pain, polydipsia, tinnitis, eye redness, sore throat in heat-dryness syndrome(溫燥). 3. Hyangsochongsitang(香蘇蔥頭湯) chn be applied for terating cool-dryness syndrome(凉燥) and chungjogoopyetang(淸燥救肺湯) for heat-dryness syndrome(溫燥). Sang Hang Tang(桑杏湯) can be administered when the evils located in the upper-warmer, and Yukmihwan(六味丸) can be administered when located in the lower-warmer(下焦) 4. According the determination of treatment based on the differentiation of symptoms and signs. When the symptoms of Weifen syndrome(衛分證) are headach, fever, dry lip or chilling or dypsia and the treatment of weifen syndrome apply Hangsosan(行蘇散) or Sang hang tang(桑杏湯). When the symptoms of Qifen syndrome(氣分證) are tinnitis, eye redness, sore throat, chest discomfort, polydipsia, dry cough, watery diarrhea, constipation and Jibaekjihwang(知栢地黃丸) when Ohingulpitang(五仁橘皮湯) Chungjogupyetang(淸燥救肺湯) can are applied for treating Qifen syndrome(氣分證). When the symptoms of younghylfen syndrome(營血分證) are dry cough, watery diarrhea, dypsia, chest discomfort, hematemesis, epistaxis and agyohwang keum tang(阿膠湯) Oknyujun(玉女煎) can be applied for treating Younghyulfen syndrome(營血分證).

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Comparison of Contrast Sensitivity Between Soft Contact Lens Wearers and Spectacle Wearers (콘택트렌즈와 안경 착용자의 대비감도 비교)

  • Kim, Jai-Min;Lee, Min-Ah
    • Journal of Korean Ophthalmic Optics Society
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    • v.12 no.4
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    • pp.119-125
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    • 2007
  • The aim of the present study was to compare the contrast sensitivity of soft contact lens wearers, spectacle wearers or emmetropia. Seventy myopic eyes and thirty emmetropic eyes aged 19 to 26 years were collected. The myopic group included 48 eyes corrected with spectacle lenses and 22 eyes of them corrected with contact lenses, too: all had corrected vision acuity of 20/20 or better. Spatial contrast sensitivity was measured using the OPTEC 6500 contrast sensitivity view-in tester included the EyeView  Functional Vision Analysis software at photopic or mesoopic condition. There was no significant difference in contrast sensitivity between spectacle lenses and emmetropes. Myopes corrected with soft contact lenses showed statistical sensitivity losses at 1.5, 12 cycle/degree spatial frequencies. In conclusion, our findings suggest that loss of contrast sensitivity in soft contact lens wearers might be interpreted as evidence for corneal disruption before corneal pathological events occur in contact lens wearers. Contrast sensitivity testing appears to be a useful method for evaluating soft contact lenses.

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Relationship between Vestibuloocular Reflex and Autonomic Nerve Response in Adults (성인에서 전정안구반사를 이용한 평형감각과 자율신경반응의 관련성)

  • 김규겸;박현영;전희정;윤상대;박병림
    • Proceedings of the Korean Society for Emotion and Sensibility Conference
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    • 1999.03a
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    • pp.237-242
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    • 1999
  • The nature of the interactions between the vestibular and autonomic systems is complex and has not been fully defined. Vestibuloocular reflex induced by sinusoidal rotation and activity of the autonomic nerves in the heart were measured to investigate the interactions between the vestibular system and the autonomic nervous system in healthy adults. Eye movement induced by sinusoidal rotation of the whole body or optokinetic stimulation at 0.04 Hz was analyzed in gain, phase, and symmetry. EKG was measured during vestibular stimulation and analyzed in heart rate variability including mean R-R interval, standard deviation (SD) and coefficient of variance (CV) of R-R interval, and power spectrum of low frequency region (LF) and high frequency region (HF). Gain of eye movement was 0.65${\pm}$0.03 by ratatory stimulation, 0.70${\pm}$0.02 in optokinetic stimulation, 0.08${\pm}$0.02 in visual suppression, and 0.84${\pm}$0.04 in visual enhancement. In R-R interval, resting condition (control) was 0.82${\pm}$0.03 sec, and visual suppression showed significant increase and visual enhancement did significant decrease compared with control (p<0.01).CV was 0.06${\pm}$0.02 in control and visual enhancement increased significantly (p<0.05). In LF/HF control was 1.40${\pm}$0.23, which was not different from rotatory or optokinetic stimulation. But visual suppression decreased LF/HF significantly and visual enhancement increased significantly compared with control (p<0.01). These results suggest that degree of gain corresponds with LF/HF and increased gain in visual enhancement is deeply related to the activity of sympathetic nerves.

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A Study on the Relationship of Space and Time in Visual Tactility (시각과 시촉각에 의한 운동 측면에서 본 공간과 시간의 관계성 연구 - 연경당 외부공간을 중심으로 -)

  • Yook, Ok-Soo
    • Journal of architectural history
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    • v.20 no.1
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    • pp.77-93
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    • 2011
  • Across the culture of Western Europe, dichotomy based on the visual sense has evolved. They believed eyes and ears requiring a distance related in recognition, are more developed than any other human senses in human body. Dominant position, as a condition to using a perspective, the eye has been just concentrated in the development of optical sight. But developed a variety of modern media, highlighting the importance of the other perception, it makes dichotomy to the expansion of perception over the single function of visuality. Recently, Guille Deleuze and Merleau-Ponty try to recover the sense of tactility segregated in skin from body keeping eyes for distance. By the result, the activity can be happened by being connected to the body rather than to eye in the space between the subject and object. From the phase of recognition where the human body tries to identify the object in the space considering a time, it will be changed for the subject to the phase of structure vice versa. Visual tactility is to eliminate the distance between subject and object. If the visual tactility is to erase the distance different from the visual in dichotomy, it will be occurred to having a tension and makes new relationship to work trying to move the subjective point of view in object. Like this evidence in analysis of architecture, it can be easy to find the Korean architecture rather than western architecture in terms of emphasizing the time and space. The fact, architecture of Lee Dynasty had been preserved and consisted basic form and style over the centuries makes us assume that visual tactility was considered as well as the visual sense. This study will be intensive in terms of visual and tactile inherent in the subject and how it is being connected to the movement in the space and time.