• Title/Summary/Keyword: 시력검사

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Related Factors with Decreased Visual Acuity of Elementary School Students (초등학생의 시력저하 관련요인)

  • Mun, Kyeoung-Ae;Lee, Moo-Sik;Na, Baeg-Ju;Lee, Jin-Yong;Hong, Jee-Young;Bae, Seok-Hwan;Yoo, Se-Jong
    • Proceedings of the KAIS Fall Conference
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    • 2010.11b
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    • pp.677-680
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    • 2010
  • 본 연구는 경기도 구리시의 2개 초등학교 5, 6학년 학생을 대상으로 시력 저하 실태 및 그와 관련된 요인들을 알아보고 시력 저하 예방교육의 기초자료로 활용하고자 시도 된 연구이다. 자료의 수집은 2009년 11월 1일부터 12월 10일까지 초등학교 5학년, 6학년 학생 793명(남 417명, 여 376명)이었고 2009학년도의 시력검사자료 분석과 문헌 및 기존의 조사도구를 토대로 개발한 자가 보고식 설문지를 이용하여 조사하였다. 자료 분석은 SPSS WIN 12.0(한글판)프로그램을 이용하여 빈도, 백분율, $x^2$-test 및 로지스틱 회귀분석의 통계적 방법으로 분석하였다. 시력저하에 유의한 영향요인으로 좌측시력을 종속변수로 한 경우 중 일반특성에 따른 변수인 부모 및 형제와 자매가 안경 및 렌즈 착용하는 경우, 경제적으로 어려울수록 시력 저하 자가 많았고, 환경특성에 따른 변수인 거실 및 방안밝기가 어두울수록, 컴퓨터 사용 시 실내밝기가 어두울수록, TV의 눈높이 및 컴퓨터 모니터의 눈높이가 높을수록 시력 저하 자가 많았다. 우측시력을 종속변수로 한 경우 중 일반특성에 따른 변수인 부모가 안경 및 렌즈를 착용할수록, 형제 와 자매가 안경 및 렌즈를 착용할수록, 경제적으로 어려울수록 시력 저하 자가 많았고, 환경특성에 따른 변수인 거실 및 방안밝기가 어두울수록, 컴퓨터 사용 시 실내밝기가 어두울수록, TV의 눈높이 및 컴퓨터 모니터의 눈높이가 높을수록 시력 저하 자가 많았다. 안경 및 렌즈를 종속변수로 한 경우 중 일반특성에 따른 변수인 부모 및 형제와 자매가 안경 및 렌즈를 착용할수록, 경제적으로 어려울수록 시력 저하 자가 많았으며, 환경특성에 따른 변수인 거실 및 방안밝기의 실내밝기가 어두울수록, TV의 눈높이 및 컴퓨터 모니터의 눈높이가 높을수록 시력 저하 자가 많았다. 눈 건강상태를 종속변수로 한 경우 중 일반특성에 따른 변수인 경제적으로 어려울수록 시력 저하 자가 많았고, 건강행동특성에 따른 변수인 주관적인 건강상태가 나쁠수록, 눈 피로감이 있을수록 시력 저하 자가 많았으며 환경특성에 따른 변수인 거실 및 방안밝기의 실내 밝기가 어두울수록 시력 저하 자가 많았다. 시력저하관련 요인을 연구한 결과 학생들의 시력 저하 자가 매년 증가하고 있다는 것을 알 수 있었고, 유전적 요인에 의한 시력저하는 개인의 노력에 의하여 사전예방이 어렵지만 환경적 요인에 의한 시력저하는 노력과 관심으로 사전예방이 가능하므로 학생들의 시력건강증진을 위하여 학부모와 학교 및 전문 의료기관이 서로 연계적인 협조 하에 학생들 개개인에 맞는 효율적인 시력증진관리프로그램 개발하는 것이 필요하고, 현행학교시력검사의 정확성을 기하기 위하여 표준화된 시력검사 지침을 개발하여 사용할 필요가 있으며, 지역 및 환경적 배경이 다르다 보니 연구결과가 다르게 나타나는 경우가 있는데 객관적인 결과를 도출하기 위하여 여러 지역의 학생을 대상으로 다양하고 체계적인 연구를 해야 할 필요성이 있다고 생각한다.

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A Study of the Relationship between Visual Charts and Illumination (시표와 조명 사이의 상호관계에 대한 연구)

  • Kim, Douk-Hoon
    • Journal of Korean Ophthalmic Optics Society
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    • v.4 no.2
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    • pp.91-96
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    • 1999
  • This study involves the research about relationship between visual charts and illumination. The subjects were both males and females in their teens and twenties. The examination instrument used was a B-VAT II BVS(Mentol) which was produced in the USA, and the illumination used was a low illumination of 100LUX and a high illumination of 1500LUX in the clinical examination room. The results were as follows: 1. Different types of illumination resulted in similar values of visual acuity. 2. In the male teen subjects, the Snellen visual acuity was better than the numerical visual acuity when using low illumination. But the Landolt visual acuity presented similar results when using both low and high illumination. 3. In male subjects in their twenties, the Numerical visual acuity was better than the Landolt and Snellen visual acuity under low illumination. 4. In the female teen subjects, The Snellen visual acuity was better than the Landolt and Numerical visual acuity under low illumination. 5. In the female subjects in their twenties, The Snellen, Landolt and numerical visual acuities were high under low illumination. 6. Different types of illumination resulted in 0.3 or 0.4 variation of visual acuity. 7. The males and females was similar to the visual acuity.

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Research on the Refractive State Screening in Preschool Children (취학전 아동의 굴절상태 실태조사)

  • Kim, Jeoung-Hee
    • Journal of Korean Ophthalmic Optics Society
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    • v.6 no.2
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    • pp.105-109
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    • 2001
  • The investigate of preschool children at 7-year-old at three kindergartens in Iksan was done by the naked visual acuity, the refractive state and cover-uncover test. Total 246 eyes were examined by the objective and subjective methods. The results were as follows: 1. Among the 246 eyes, the naked visual acuity of below the average 0.7 was 64 eyes(26%). 2. As to the distribution of refractive errors, myopic eyes and hyperopic eyes were 26.55% and 26.55%, respectively. 3. As to the type of astigmatisms, with the rule was 85.8%, against the rule was 8.9% and oblique was 5.3%. 4. The percentage of preschool children who had been tested was 13.8%. 5. In test none of children were the phoria.

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A Study of The Refraction at Video Display Terminal (VDT를 이용한 굴절검사에 대한 연구)

  • Lee, Hak Jun
    • Journal of Korean Ophthalmic Optics Society
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    • v.5 no.2
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    • pp.49-53
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    • 2000
  • Comparing to an Image test chart which printed from computer. Hahn's standard test chart and Chart project test chart propose to make the program of an image test chart in computer. Test type of the test chart should be programed by difference size which was examined Hangul program of Hangul & Computer Co. An image test of visual acuity most decreased among 3 kinds of testing. Testing of Fixation disparity was same between Diplopia test and chart project test chart, so that. Design of test chart could be programed diverse by Hangul program of Hangul & Computer Co.

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Effect of Visual acuity for Change of Astigmatism axis in Myopic astigmatism (근시성 난시안에서 난시축 변화가 시력에 미치는 영향)

  • Choi, Jun-Gyu;Kim, Bo-Yun;Lee, Eun-Hee
    • Journal of Digital Convergence
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    • v.13 no.12
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    • pp.285-290
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    • 2015
  • The purpose of this study is to compare the status of eyesight according to the change of astigmatism axis in myopic astigmatism and to minimize errors in making astigmatic glasses based on accurate optometry and prescription. The subjects were 93 males and females(186 eyes) who have myopic astigmatism without any ocular disease or systemic disease. We performed comparative analysis on the status of visual acuity according to the change of astigmatism axis to 5, 10 and 15 degree in corrected eyesight 1.0. The direct astigmatism was the most common astigmatism type among the 186 eyes. After all subjects were perfectly corrected into 1.0, the change of astigmatism axis affected eyesight; The results suggested that the more change was made in astigmatism axis, the worse their eyesight would become. The main astigmatism type was changed from direct astigmatism to inverse astigmatism as age increased. The change of the astigmatism axis resulted in failing of corrected eyesight. Therefore, the convergence of examination and correction for astigmatism strength and axis is necessary when conducting refraction inspection for astigmatism.

Diurnal fluctuations of vision in myopes (근시안의 일일 시럭변동에 관한 연구)

  • Park, Sang-Chul;Sung, A-Young;Kim, Tae-Hyun;Kim, Douk-Hoon
    • Journal of Korean Ophthalmic Optics Society
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    • v.10 no.1
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    • pp.35-40
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    • 2005
  • Subjective and objective visions were measured on young adults(mean 21 yrs, 126 eyes) who were free of any ocular diseases and laser surgery and none wore contact lenses. The aim of this study was to investigate the diurnal variation of vision through subjective and objective measurements. Subjective visual acuity were measured at 5 m three times a day, morning(8:00 AM-10:00 AM), noon(12:00 PM-2:00 PM) and afternoon(4:00 PM-6:00 PM). The instrument used for objective refraction right after visual acuity measurement was Nvision-K 5001(shin-nippon) which unique in being able to disregard subject's accommodation because of its unrestricted viewing conditions. Also, we measured that three times and then calculated the average values. The result showed that an average subjective visual acuity in the morning, noon, afternoon were 0.256(${\pm}0.263$), 0.266(${\pm}0.276$), 0.242(${\pm}0.249$) respectively. Average spherical equivalent power in objective refraction of right eyes showed -3.416 D(${\pm}2.907$), -3.359 D(${\pm}2.735$), -3.297 D(${\pm}2.709$) respectively and dioptric power was decreased from morning to afternoon. Vision changed throughout the day in both subjective and objective measurements nevertheless its variations were statistically insignificant(p<0.05). Therefore it does not seem to matter of time for either visual acuity test or refraction.

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A Study on the Spectacles Wearing State of High School Students (고등학생들의 안경착용에 관한 연구)

  • Doo, Ha-Young;Sim, Sang-Hyun
    • Journal of Korean Ophthalmic Optics Society
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    • v.5 no.1
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    • pp.107-116
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    • 2000
  • This study is of investigation of refraction error, spectacles and contact lenses wearing state, visual acuity test, ophthalmologic common sense and vision care, using questionnaire study for 850 male and female high school students in Kunsan and Chongup City, Cheolla North Province. The results are as follows: 1. Among the 823 answerers, emmetropia is 18%, myopia is 55.1%, and hyperopia is 7%, respectively. 2. Among the 837 answerers, 381 students(45.5%) wear spectacles or contact lenses. Among the 381 students who wear spectacles or contact lenses, 78% wear only spectacles, 4% wear only contact lenses and 18% wears spectacles sometimes or contact lenses sometimes. 3. The places where the answerers had visual acuity test to wear spectacles or contact lenses are optical shop(64.7%), hospital(28.3%), unchecked(4.2%) and the others(2.7%). The places where the answerers had visual acuity test to change their spectacles or contact lenses are optical shop(82%), hospital(28.3%), unchecked(6.6%) and the others(1.9%). 4. As for the period of visual acuity test, from 6 months to one year is 54.1%, within 6 months is 9.2%, from one year to two years is 29.5%, and more than two years is 7.2%. 5. The contact lens wearers purchased their contact lenses at optical shops(94%) and at hospital(6%). 6. The reasons why they like wearing contact lenses are their appearance(51.2%), convenience in physical excercise(23.l%), lighter weight than spectacles(9.8%) and the others(15.7%). 7. As for the spectacles frame they like, plastic frame is 24.4%, gold or silver plated frame is 43.4%, coloured frame is 32.1%. 8. As for the considerations in choosing spectacles frame, their design is 37%, their quality is 36%, their price is 14.7% and their brand is 12.5%. 9. As for the period for changing spectacles, 10.5% is within 6 months, 57.3% is 6months to 1 year, 22.4% is 1 year to 2 months and 9.6% is more than 2 years. 10. There is a false fact, in Korea, that even though one has his poor eyesight, not wearing custom is helpful for the eyesight recovery. As for their conviction of the false fact, 10.5% of the answerers have 100% conviction, 22.5% of them have 22.5% conviction, 49.5% of them have 50% conviction and 17.5% of them don't have any conviction. 11. 48.5% of the answerers are interested in their vision care while 51.5% of them are not interested at all. As for the way of vision care, the vision-care way to keep enough distant when they are watching TV, when they are using computers and when they are reading, is 49% while the vision-care way such as hypogastric breathing or eye massage is 11%. And alimentotherapy is 4% and the rest who are not interested in vision care is 36%. 12. When they come to an age, the students who want vision correction operation are 45.9% while the students who do not want it are 27%. The students who do not have any idea about the operation are 27.1%

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Time-dependent Changes of Visual Acuity After Alcohol Ingestion (음주 후 시간경과에 따른 시력의 변화)

  • Kim, Sang-Yoeb;Lee, Sun Haeng;Moon, Byeong-Yeon;Yu, Dong-Sik;Cho, Hyun Gug
    • Journal of Korean Ophthalmic Optics Society
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    • v.13 no.2
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    • pp.59-62
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    • 2008
  • Purpose: This study was designed to investigate the time-dependent changes of visual acuity after alcohol ingestion. Methods: Both the subjective and objective refraction, distant contrast sensitivity, and three needle tests were carried out at 1 and 3 hours after alcohol ingestion. Results: It was found that the degree of myoptization increased as the blood alcohol level increased in the range of average -0.25D ~ -0.35D when tested 1 and 3 hours after alcohol ingestion. Under the same test conditions the increase in blood alcohol resulted in the reduction in the function of dynamic stereopsis. However, the variation in contrast sensitivity was found to be insignificant for all spatial frequencies. Conclusions: The optician has to be well aware of the fact that alcohol could affect the visual acuity and functional tests, therefore inquiring of the alcohol ingestion prior to visual test can be necessary.

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The Study of Kinetic Visual Acuity in College Students (대학생의 동적시력에 관한 연구)

  • Shim, Moon-Sik;Kim, Sang-Hyun;Kang, Hye-Sook;Shim, Hyun-Suk
    • Journal of Korean Ophthalmic Optics Society
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    • v.17 no.4
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    • pp.419-424
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    • 2012
  • Purpose: We were to obtain the basic data for studying kinetic visual acuity through the comparative analysis in kinetic visual acuity, visual acuity, refractive error, pupil size, and hand reaction time for college students. Methods: We had tested the kinetic visual acuity, visual acuity, refractive error and hand reaction time using the kinetic visual acuity tester (KOWA AS-4A), the hand reaction time program and auto-refractometer for thirty-nine male and same female optometry students with more than +0.1 LogMAR visual acuity in both eyes. And the results were examined gender differences of kinetic visual acuity and the factors correlation. Results: In the measured values of male, pupil size were 6.00 mm, hand reaction time 0.23 msec, refractive error -1.66 D, visual acuity -0.07, kinetic visual acuity 0.59 and pupil size 5.86 mm, hand reaction time 0.24 msec, refractive error -2.08 D, visual acuity -0.02, kinetic visual acuity 0.46 in female. It was significant difference for kinetic visual acuity values but other factors were not. The kinetic visual acuity and left visual acuity had the highest correlation, r=-0.406. The kinetic visual acuity indicated more excellent values in the case of increasing visual acuity and decreasing myopia amount. Conclusions: It was able to see that male college students were better than female for kinetic visual acuity and the visual acuity were related to kinetic visual acuity.