• 한국임상보건과학회지
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• 제9권2호
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• pp.1535-1542
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• 2021

Purpose. This study categorizes vision correction subjects by age and gender, and aims to find out which glasses or contact lenses the subjects of each age group show preference based on the answers of the questionnaires answered by the subjects. Methods. A study was conducted in the form of a questionnaire through SNS on the types of correction tools used for the purpose of correcting ametropia for the general public from their teens to their 50s. Results. As for the most preferred method for correcting asymmetry, in the case of teenagers, glasses were the most common at 50%, glasses and contact lenses the most at 43.8% each, and glasses in their 30s at 50%. Those in their 40s had the most glasses at 75%, and those in their 50s wore glasses and sunglasses at 50%. Conclusions. Since the demand for vision correction and eye protection methods varies according to age and gender, it is necessary to identify and design the flow of these demands in the existing market. Therefore, it is necessary to make a judgment that can contribute to the development of eye health targeting the main customer base and the provision of appropriate services to consumers.

• 한국임상보건과학회지
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• 제7권1호
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• pp.1232-1237
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• 2019

Purpose. In this study, two types of soft contact lenses with different materials were selected to compare the time of tear film destruction and high order aberrations before and after wearing. Methods. Thirty patients (60 eyes) in their 20s were included in this study. Two lenses with different materials, Group 4 (Etafilcon A) and Group 5 (Narafilcon A) were selected. Using aberration analyzer and keratometry, high-order aberration and tear film test (NIF-BUT, NIAvg-BUT) were performed before and after wearing. Results. When comparing the higher aberrations of the Etafilcon A and Narafilcon A lenses, the higher aberrations of the Narafilcon A lens were higher overall. For the initial tear film break-up time (NIF-BUT) after wearing, the Etafilcon A lens was reduced by 4.0 seconds and the Narafilcon A lens increased by 0.6 seconds. For the mean tear film break-up time (NIAvg-BUT) after wearing, the Etafilcon A lens decreased by 2.4 seconds and the Narafilcon A lens increased by 1.7 seconds. Conclusions. NIF-BUT and NIAvg-BUT of Narafilcon A lens were increased. The lens with relatively low water content and higher oxygen permeability than the lens with high water content has relatively less tear evaporation, which means that the time of destruction of the tear film is increased.

• 한국임상보건과학회지
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• 제11권1호
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• pp.1639-1643
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• 2023

Purpose. We wanted to find out how the changes in brain function affected by the beats per minute (BPM) of music affected visual function. Methods. The subjects were 40 people in their 20s (30 men, 10 women) with no eye disease, strabismus, amblyopia and a corrected visual acuity of 1.0 or higher. Wearing headphones while excluding surrounding noise as much as possible, we played music while adjusting the beat rate at 40 BPM intervals from 80 to 200 BPM. Then, pupil size measurement, lag of accommodation test, and minus lens addition method maximum accommodation test were performed and analyzed. Results. As a result of analyzing changes in visual function according to beats per minute [BPM], it was found that although sound can be consciously affected, it does not directly affect visual function significantly in terms of accommodative lag and changes in pupil size. It was confirmed that the effect was limited to the maximum accommodation. Conclusions. In clinical practice, it is necessary to conduct a refraction test while keeping in mind that there are changes in visual function depending on the BPM of surrounding sounds.

• 한국임상보건과학회지
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• 제4권2호
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• pp.550-555
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• 2016

Purpose. We compared with the refracting power and aberration according to the measurement change in illumination and the pupils area by using the auto refraction instruments. Methods. In this study it were examined 64 eyes without eye disease, 21.4 (${\pm}2.54$) age, 32 (male 10, female 22) patients. Experiments in general illumination using the auto refraction instruments (HRK-8000A, Huvitz, Korea) was measured in both eyes 3 times and after scotopic for 30 minutes in a dark room blocked the light was measured in the same way. Aberration were measured coma, spherical aberration, high and low order aberrations in a general illumination (3500 lux) and low illumination (5 lux) of the pupil area 3.96 mm and 5.96 mm. Results. In the general illumination for measuring of the pupil area, the refractive power, coma, spherical aberration and low order aberration was no significant difference. In the low illumination, spherical aberration of the pupil area was $0.005({\pm}0.015){\mu}m$ in a 3.96mm, $0.014({\pm}0.020){\mu}m$ in a 5.96 mm and appeared a significant difference(p = 0.003). In general and low illumination on the results of comparing the measured values of the refractive power and aberration at the pupil area 3.96 mm, high order aberrations was $0.205({\pm}0.145){\mu}m$ in general illumination, $0.132({\pm}0.075){\mu}m$ in low illumination and appeared a significant differences(p = 0.001). High order aberrations at the pupil area 5.96 mm was $0.278({\pm}0.244){\mu}m$ in general illumination, $0.150({\pm}0.092){\mu}m$ in low illumination and appeared a significant differences(p = 0.000). Conclusions. When the eye refractive power measured by the automatic refraction does not depend on the illumination conditions and size of the observation pupil area, it was found that aberrations are affected by the illumination and the observation pupil area. It was found that the eye examination chamber illumination to obtain accurate measurement produces better results to decrease than to increase.

• 한국컴퓨터정보학회논문지
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• 제26권9호
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• pp.155-166
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• 2021

최근 디지털헬스케어 기술이 여러 분야로 전파되며 발전하고 있다. 그래서 본 논문에서는 비교적 디지털 헬스케어 기술이 적용되지 않은 분야가 검안분야라고 파악하여 정밀한 렌즈 제작을 위한 디지털 헬스케어 검안시스템을 구현했다. 렌즈를 제작하기 위해서는 프롭터란 기기가 사용되며 이 기기는 안경을 의뢰한 피측정인의 시력을 측정하여 렌즈를 세팅해 준다. 그리고 피측정인이 안경 착용시 동공중심과 렌즈초점을 맞추기 위해 PD미터란 기기를 사용한다. 그러나 PD 측정 오차, 프롭터 수동제어로 인한 불편함 및 오차, 검안 정보를 축적하고 분석할 수 있는 데이터베이스와 프로그램의 부재로 정밀한 렌즈 제작 및 검안 편의성에 한계가 있다. 그래서 본 논문에서는 보다 정확한 PD 측정을 위한 PD미터 설계, 프롭터 자동제어를 위한 프롭터 설계, 프롬터 제어 어플리케이션 설계, 피측정인별 검안정보를 활용해 렌즈를 자동 세팅해 주는 데이터베이스와 분석 프로그램 설계를 통해 최종적으로 검안 데이터베이스를 활용한 디지털 헬스케어 검안기 시스템을 구현했다.

• 한국안광학회지
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• 제20권1호
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• pp.9-14
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• 2015

목적: 본 논문에서는 안경테가 땀에 노출되었을 때 나타나는 변화를 알아보았다. 방법: 양백, 모넬 및 티타늄 재질의 안경테를 pH 6.5, 6.0, 5.0의 인공땀에 1주, 3주, 6주 동안 노출시킨 후 표면, 경도, 인장강도의 변화를 알아보았다. 결과: 인공땀에 의해 양백, 모넬, 티타늄 재질 안경테 표면의 부식이 유발되었으며 부식 양상은 각 재질별로 상이하였다. 인공땀의 pH와 노출시간에 비례하여 3가지 재질의 안경테 모두 경도가 감소하였으나 인장강도는 변화가 없었다. 결론: 인공땀에 의해 안경테의 표면 부식과 경도 변화가 관찰되었으므로 안경테의 일상적인 관리가 필요함을 제안한다.

• 한국임상보건과학회지
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• 제6권1호
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• pp.1083-1088
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• 2018

Purpose. The purpose of this study was to investigate the effect of lens color of sunglasses on stereoacuity by experiment. Methods. We conducted a stereotaxic test using a RANDOM DOT with a polarizing lens at an examination distance of 40 cm in 100 men and women aged 20 to 60 years without any specific ocular disease. Then, seven kinds of PVC color film such as yellow, black, brown, red, purple, blue and green were put on the polarizing lens and the stereoscopic examination was carried out again. Results. When the lens color of the sunglasses is yellow, black, and brown, it affects less stereoscopic effect. However, red, purple, blue, and green have much influence on stereoscopic effect. Especially, the red and purple colors affected the stereoscopic vision. In blue and green, the effect of stereoscopic vision was different according to the people. Conclusions. Depending on the lens color of the sunglasses, stereoscopic vision is affected, which can cause problems in binocular vision. Therefore, when choosing sunglass lens color, many buyers need to pay attention.

• 한국임상보건과학회지
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• 제10권2호
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• pp.1594-1599
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• 2022

Purpose. To investigate the relationship between changes in eye temperature and eye fatigue according to smartphone usage time. Methods. 15 adults in their 20s were asked to watch a smartphone, and the ocular surface temperature was measured 5 times each using a non-contact infrared thermometer every 10 minutes, and the change was observed. Result. The ocular surface temperature was 36.40℃ at the center of the cornea before watching the smartphone, but increased by 0.19℃ to 36.59℃ after watching the smartphone (SD 36.50±0.10). In addition, in the case of the sclera, it was found that the increase was 0.1℃ from 36.48℃ before viewing to 36.58℃ after viewing (SD 36.53±0.05). Conclusion. It was found that there is a close relationship between smartphone use and changes in eye temperature. In the future, it is thought that the ocular surface temperature can be used as basic data to objectively evaluate eye fatigue.

• 한국안광학회지
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• 제19권3호
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• pp.403-406
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• 2014

목적: 울산지역의 안질환 발생환자에 있어서 연령별에 따른 특정질환을 알아보고자 하였다. 방법: 울산지역의 안과병원을 내원한 환자 300명을 대상으로 환자의 성별, 초진당시 연령, 과거력, 진단명 등을 기준으로 분석하였다. 결과: 10대의 경우에는 각막염이 가장 많은 비중을 차지하였고, 20대는 건조증과 각막염, 30대는 콩다래끼와 결막염, 40~50대의 경우에는 결막염, 60대의 경우에는 결막염과 백내장이 많은 비중을 차지하는 것으로 나타났다. 결론: 주요 안질환 원인으로는 10~20대는 콘택트렌즈의 부적절한 착용과 스마트폰과 컴퓨터 매체 등의 장기간 사용, 30~50대는 알러지성 결막염이나 화학물질 등으로 인한 반응 등 여러 가지 요인으로 분석되는데 특히, 공업지역의 특성상 타지역 보다 결막염의 발생빈도가 더 높게 나타났으며, 50대 중반부터 60대 이상은 일종의 노화현상이 원인인 것으로 분석되어진다. 따라서, 본 연구결과는 울산지역에서 발생될 수 있는 안질환 예방을 위한 기초 자료로 활용될 수 있을 것으로 여겨진다.

• 한국임상보건과학회지
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• 제3권3호
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• pp.378-389
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• 2015

Purpose. The actual status of wearing toric soft contact lenses was investigated to learn why it is not used although it is required. Materials and Methods. This study has studied 64 contact lens wearing the local college students, Gyeongsangnam-do who are 20.17(${\pm}0.70$)years old, by measuring their refractive power and over-refractive power with auto refractometer(HRK-8000A, Huvitz, Korea). In addition to that, a survey was done to figure out why they do not wear toric soft contact lenses, the purpose of using toric soft contact lenses, whether they have astigmatism or any knowledge about it, the kinds of contact lens, whether they are willing to buy corrective lenses, and how they are satisfied after purchasing them. Results. 17 students (21.9%) said they experienced light-spread; 9 students (14.1%)said that they have dizziness when they wear contact lens all day long. In the survey to see whether they had astigmatism or not, 37 students (57.8%) said they had it. For the reason they do not wear toric soft contact lenses, 33 students (51.6%) said that "they were prescribed regardless of astigmatism in the optometrist." To the question asking if they are willing to buy toric soft contact lenses according to the existence of astigmatism, 51 students (79.6%) answered they are. 31 students (48.4%) said they heard a description about astigmatism at the time of purchase for contact lens. Conclusion. As the ways for any people who need to correct astigmatism to wear corrective lens, enough education about astigmatism and consistent follow-up management are needed, where the role of optometrist is considered important.