• 대한감각통합치료학회지
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• 제3권1호
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• pp.13-21
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• 2005

Objective : The purpose of this study was to investigate the correlation between hand dexterity and visual-motor skills of preschoolers. We searched for the correlation between two test results, which were the 9-Hole Peg Test performance time and the visual motor integration test(VMI) performance score. Then, we also compared the 9-Hole Peg Test performance times with the VMI performance scores according to sex and age. Method : The participants were fifty normal children ranging in age from four to six years living in Busan. We used two test methods which have high reliability and validity. One was the 9-Hole Peg Test to evaluate hand dexterity, and the other was the VMI to the evaluate visual-motor skills of these young children. Results : First, over the entire range of the participating children, there was a high correlation between the performance times from the 9-Hole Peg Test and the VMI performance scores(r=-.682). Second, there was not a statistically significant difference between the performance times from the 9-Hole Peg Test and the VMI scores according to sex. Third, there were significant differences between the hand dexterity and visual-motor skills according to the children's age(p<.001). Conclusion : This study proved that there is high correlation between hand dexterity and visual-motor skills of the preschooler. Occupational therapists in preschool service should consider that visual-motor skills need to be compatible with hand dexterity in both evaluation and therapy. In addition, hand dexterity and visual-motor skills improved according to advances in age, so we must give graded tasks to proper age groups through concrete analysis of activity. By doing this, children can get the better therapeutic effects.

• 한국안광학회지
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• 제13권2호
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• pp.59-62
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• 2008

목적: 알코올 섭취 후 시간경과에 따른 시력변화를 알아보고자 하였다. 방법: 음주 1시간 및 3시간 후의 자각적 타각적 굴절검사, 원거리 대비감도 검사, 그리고 세막대 입체시 검사를 실시하였다. 결과: 혈중 알코올 농도의 상승과 비례하여 평균 -0.25D ~ -0.35D의 근시성 변화를 일으켰고, 동적입체시 기능이 저하되는 것으로 나타났다. 그러나 대비감도는 모든 공간주파수에서 큰 변화가 없는 것으로 나타났다. 결론: 알코올이 일반적인 시력검사 및 기능검사에 영향을 끼친다는 사실을 숙지하고 피검자의 검사 전 알코올 음용에 대해 문진할 필요성이 있다.

• 국제물리치료학회지
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• 제10권2호
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• pp.1768-1773
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• 2019

Background: Aging reduces cognitive abilities, including visual memory (VM) and visual discrimination (VD). Since common cortical networks subserve eye movement and attention, voluntary eye movement may improve visual attention. Visual selective attention was major role for memory, and visual memory and visual attention are intimately related. Objective: To identify the improvement in VD and VM, after implementing the eye movement program consisting of saccadic eye movement (SEM) and pursuit eye movement (PEM) in the institutionalized healthy elderly. Design: Randomized controlled trial. Methods: The study involved a sample of 36 participants, and the mean age was 79.03 years (range 76~84 years). They were randomly allocated to the experimental group (n=16) and control group (n=20). Participants in the experimental group performed SEM 5 times per week for 4 weeks: twice daily at the same time in the morning and afternoon. The program was carried out for 3 minutes, and it consisted of SEM and PEM. The target's moving frequency was set at 0.5 Hz. VM and VD at the baseline and post-intervention were measured using Motor-Free Visual Perception test-4 (MFVPT-4). Results: VM significantly improved in the experimental group (p < .01), and significant differences were observed compared to the control group (p < .01). There was no significant change in VD. Conclusion: The eye movement program consisting of SEM and PEM increased VM more than VD. Therefore, eye movement program was feasible interventions for improving VM in institutionalized elderly persons.

• 한국융합학회논문지
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• 제12권2호
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• pp.113-120
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• 2021

본 연구는 시각적인 장애를 호소하는 ADHD로 진단받은 아동의 유형별 시각 기능의 특징을 확인하고자 하였다. 연구 대상자는 ADHD로 진단받은 아동 49명으로 시각기능이 정상범위에서 벗어난 경우이다. Korean-ADHD Rating Scale을 이용하여 ADHD 유형을 알아보았고 시각기능 검사를 통해 시각 기능의 문제를 알아보았다. 시각의 문제를 가지고 있는 ADHD 아동들은 부주의 유형(69.4%)이 가장 많았으며 시력은 좋지만 시각 기능 문제가 드러난 경우도 50% 정도 되었다. 주의력결핍 유형에서 근시 관련 시각장애, 과잉활동형 유형에서 난시 관련된 시각장애가 높게 나타났다. 버전스 기능 장애에서는 폭주부족이 가장 많았으며 유형별 차이는 나타나지 않았다. ADHD 아동의 유형별 시각장애의 특성은 차이가 나타나므로 시각 기능 장애의 검사와 선별을 통해 아동의 문제행동에 접근하는 것이 필요하다.

• 대한통합의학회지
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• 제11권2호
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• pp.207-219
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• 2023

Purpose : This study was conducted to investigate the changes in trunk movement and ground reaction during sit to stand motion using visual feedback. Methods : Fifteen adults (average age: 23.53±1.77 years) participated in this study. An infrared reflective marker was attached to the body each participant for motion analysis, and the participants performed sit to stand motion while wearing a hat attached with a laser pointer, which provided visual feedback. First, the sit to stand action was repeated thrice without obtaining any visual feedback, followed by a three minute break. Next, the laser pointers attached to hats were irradiated on a whiteboard, located at a distance of 5 m in front of the chairs, on which the participants sat; a baseline was set, and the participants performed stand up movements three times under this condition. A visual feedback was provided to the participants to prevent the laser pointers from crossing the set baseline. During each stand-up movement, the position of the reflective marker attached to the subject's body was recorded in real time using an infrared camera for motion analysis. The trunk movement and ground reaction force were extracted through recorded data and analyzed according to the presence or absence of visual feedback. Results : The results indicated that in the presence of a visual feedback during the sit-to-stand movements, the range of motion of the trunk and hip joints decreased, whereas that of the knee and ankle joints increased in the sagittal plane. The rotation angle of the trunk in the horizontal plane decreased. The left and right movement speed of the center of pressure increased, the pressing force decreased, and the forward and backward movement speed of the trunk decreased. Conclusion : The results suggest that the efficiency and stability of the stand up movement of a body increase when a visual feedback is provided.

• 대한물리의학회지
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• 제8권2호
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• pp.153-161
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• 2013

PURPOSE: This study aimed to investigate the effect of complex theraputic exercise on visual analog scale of pain, shoulder' range of motion for middle-aged women with breast cancer related lymphedema. METHODS: The 14 middle-aged women involved voluntary in this study and then they were divided into two groups(n =7 per group). The complex exercise program was implemented over 4 weeks, 60 minutes per day, with 3 types of exercise for stimulation whereas the control group was performed a classical decongestive physiotherapy in a same day. For data analysis, the mean and standard deviation were estimated; 2 way repeated measures ANOVA was carried out. RESULTS: First, The level of VAS was significantly reduced on time, interaction effect in the group. Second, most factors of ROM were significantly increased on time, interaction effect whereas extension was not significantly increased. CONCLUSION: In conclusion, Our results showed that complex therapeutic exercise could improve or maintain VAS and ROM of shoulder joint for middle-aged women with breast cancer related lymphedema.

• The Journal of Korean Physical Therapy
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• 제15권3호
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• pp.65-90
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• 2003

To identify the effects of joint mobilization on the functional improvement of patients with neck pain, the present research investigated 60 neck pain patients, dividing them into a group doing joint mobilization, a group doing Mckenzie exercise and a group using modalities. This study examined patients degree of recovery from neck pain by comparing their neck pain before and after the treatment, and compared three groups to find difference in the degree of recovery from neck pain. The results of this study are as follows : 1. For the joint mobilization group, the visual analogue scale (VAS) decreased significantly for three weeks treatment, and the range of motion (ROM) of cervical vertebrae increased significantly(p<.05). 2. For the Mckenzie exercise group, the visual analogue scale decreased significantly for three weeks treatment, and the range of motion cervical vertebrae increased significantly(p<.05). 3. For the modality using group, the visual analogue scale decreased significantly for three weeks treatment, and the range of motion of cervical vertebrae increased significantly(p<.05). 4. In the comparison of VAS and ROM of the three groups before and after the treatment, significant differences were found among the three groups in VAS after three weeks' treatment, and in ROM before the treatment(p<.05). 5. In all the three groups, VAS decreased and the ROM of cervical vertebrae increased after the treatment, and in particular, the decrease of VAS and the increase of the ROM of cervical vertebrae were remarkable in the joint mobilization group.

• 한국정보통신학회논문지
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• 제19권1호
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• pp.41-49
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• 2015

일반적으로 원거리 피사체를 입체로 촬영할 경우 두 대의 카메라를 교차하기 보다는 평행으로 놓고 좌우 영상을 획득한다. 이를 위해서 특정거리 피사체에 대하여 축간거리와 렌즈의 초점거리를 다양하게 변화시켜가면서 좌우영상들의 깊이총량을 분석하였다. 이들 분석 작업을 통하여 시각적 피로와 시각적 불안정을 주지 않는 축간거리와 렌즈의 초점거리에 대한 데이터를 선택하고, 이들 데이터를 통하여 퍼지제어기를 설계하였다. 피사체에 대한 입체영상을 획득하기 위하여 설계한 퍼지제어기로 축간거리와 렌즈의 최대초점거리를 추론하여 안정된 입체영상임을 확인하였다. 설계된 퍼지제어기는 원거리 피사체의 거리만 입력되면 카메라의 축간거리와 카메라 최대 초점거리 범위가 설정되는 동적 시스템 설계에 활용될 수 있음을 확인하였다.

• 대한안과학회지
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• 제59권12호
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• pp.1108-1113
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• 2018

목적: 결막 유피지방종의 임상 양상에 관해 알아보고자 하였다. 대상과 방법: 2016년 3월부터 2018년 3월까지 본원 안과에 방문하여 결막 유피지방종으로 진단받은 18명의 임상 소견을 후향적으로 분석하였다. 결과: 내원 당시 평균 연령은 61개월(3개월-45세)이었으며, 남자가 10명, 여자가 8명이었고, 각막윤부에서 평균 4.7 mm (2-8 mm) 거리의 이측, 안와연 앞쪽 눈알결막에 분홍색의 종괴가 관찰되었다. 시력 측정이 가능했던 8명의 종괴가 있는 눈의 평균 시력은 0.9(0.6-1.0)였다. 2안에서 제거 수술을 시행하였으며, 제거한 조직의 병리검사상 결막 유피지방종으로 진단되었고, 수술 후 시력 변화는 없었으며, 특별한 합병증도 관찰되지 않았다. 결론: 선천적으로 안구의 이측 결막하에 볼록한 종괴가 관찰되고 움직임이 없으면, 결막 유피지방종을 의심해 볼 수 있으며, 전산화단층촬영과 병리조직학적 검사를 통해 확진할 수 있겠다.

• 한국항행학회논문지
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• 제22권6호
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• pp.491-499
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• 2018

항공기 이착륙 유무의 중요한 지표 중 하나인 활주로 가시거리는 기온, 습도 등과 같은 기상 조건에 영향을 받는다. 비행장의 활주로 이용 시 도착시점에서의 활주로 가시거리를 예측하는 것은 항공기 이용의 효율성에서 중요하다. 본 연구에서는 활주로 가시거리를 예측하기 위해 기존에 제안된 심층 신경망을 활용한 활주로 가시거리 예측 모델의 고도화를 통해 1시간 이후의 국지 비행장의 활주로 가시거리를 예측하였다. 이를 위해 예측 모델의 고도화는 입력 값으로 기상 정보(기온, 습도, 풍속, 활주로 가시거리)에 대한 시간 간격 변화와 예측 값의 선형변환을 통해 진행하였다. 제안된 방법은 과거 기상 관측 값을 바탕으로 예측 모델의 학습을 생성해 1시간 이후의 활주로 가시거리에 대한 예측을 수행하였고, 1시간 이후의 측정된 활주로 가시거리와 비교를 통해 타당성을 확인했다. 제안된 예측 모델은 예보를 제공해주지 않는 지역의 소규모 비행장에서 참고할 수 있는 활주로 가시거리 생성에 활용 할 수 있을 것이다.