목적: 본 연구에서는 수영장에서의 써클콘택트렌즈 사용 실태를 알아보고, 수영장 물에 써클콘택트렌즈가 노출되었을 때 굴절력, 함수율 및 착색 부분의 변화를 분석하고자 하였다. 방법: 10대 및 20대 남녀 140명을 대상(남자 30명, 여자 110명)으로 수영장에서의 콘택트렌즈 사용 실태 조사를 설문을 통하여 실시하였다. 또한 6종의 써클콘택트렌즈를 수영장 물에 2, 4, 6시간 동안 노출시킨 후 굴절력과 함수율을 측정하였으며, 주사전자현미경 관찰을 통해 착색부분의 변화를 알아보았다. 결과: 실태조사 결과에서 64.1%가 콘택트렌즈를 착용한 채 수영장을 이용한 경험이 있으며 그 중 53.8%가 써클콘택트렌즈를 착용한 것으로 나타났다. 71.4%의 응답자가 1회용렌즈가 아닌 렌즈를 착용한 채로 수영장을 이용하였으며, 93.9%의 응답자가 자각증상을 호소하였으며 사용한 렌즈를 재사용한 경험이 있다는 응답자가 51.0%를 차지하였다. 수영장 물에 노출됨에 따라서 써클콘택트렌즈 중에서는 통계적으로 유의한 굴절력 변화가 나타난 경우가 있었으나 제조사의 허용오차 범위인 ${\pm}0.25D$에서 벗어나지 않아 노출 시간에 따른 굴절력의 변화는 크지 않음을 확인하였다. 함수율이 50%가 넘는 써클콘택트렌즈에서 수영장 물 노출시에 함수율 감소 정도가 상대적으로 더 큰 것으로 나타났다. 착색공법이 샌드위치 공법이 아닌 써클콘택트렌즈는 수영장 물에 의한 착색 부분 표면의 거칠기, 명암, 가장자리부분 염료의 불분명함이 관찰되었다. 결론: 수영장 물 노출에 의해 함수율 및 착색부분의 변화가 있음에도 불구하고 수영장에서 써클콘택트렌즈를 착용하는 경우가 많았다. 이에 수영장에서의 써클콘택트렌즈의 착용을 자제해야하며 불가피하게 이용해야 할 시에는 저함수율의 샌드위치 공법의 써클콘택트렌즈를 착용하는 것이 문제점을 줄일 수 있을 것으로 보인다.
목적: 본 연구에서는 수영장에서의 써클콘택트렌즈 사용 실태를 알아보고, 수영장 물에 써클콘택트렌즈가 노출되었을 때 굴절력, 함수율 및 착색 부분의 변화를 분석하고자 하였다. 방법: 10대 및 20대 남녀 140명을 대상(남자 30명, 여자 110명)으로 수영장에서의 콘택트렌즈 사용 실태 조사를 설문을 통하여 실시하였다. 또한 6종의 써클콘택트렌즈를 수영장 물에 2, 4, 6시간 동안 노출시킨 후 굴절력과 함수율을 측정하였으며, 주사전자현미경 관찰을 통해 착색부분의 변화를 알아보았다. 결과: 실태조사 결과에서 64.1%가 콘택트렌즈를 착용한 채 수영장을 이용한 경험이 있으며 그 중 53.8%가 써클콘택트렌즈를 착용한 것으로 나타났다. 71.4%의 응답자가 1회용렌즈가 아닌 렌즈를 착용한 채로 수영장을 이용하였으며, 93.9%의 응답자가 자각증상을 호소하였으며 사용한 렌즈를 재사용한 경험이 있다는 응답자가 51.0%를 차지하였다. 수영장 물에 노출됨에 따라서 써클콘택트렌즈 중에서는 통계적으로 유의한 굴절력 변화가 나타난 경우가 있었으나 제조사의 허용오차 범위인 ${\pm}0.25D$에서 벗어나지 않아 노출 시간에 따른 굴절력의 변화는 크지 않음을 확인하였다. 함수율이 50%가 넘는 써클콘택트렌즈에서 수영장 물 노출시에 함수율 감소 정도가 상대적으로 더 큰 것으로 나타났다. 착색공법이 샌드위치 공법이 아닌 써클콘택트렌즈는 수영장 물에 의한 착색 부분 표면의 거칠기, 명암, 가장자리부분 염료의 불분명함이 관찰되었다. 결론: 수영장 물 노출에 의해 함수율 및 착색부분의 변화가 있음에도 불구하고 수영장에서 써클콘택트렌즈를 착용하는 경우가 많았다. 이에 수영장에서의 써클콘택트렌즈의 착용을 자제해야하며 불가피하게 이용해야 할 시에는 저함수율의 샌드위치 공법의 써클콘택트렌즈를 착용하는 것이 문제점을 줄일 수 있을 것으로 보인다.
Purpose: Aims of this study was to investigate the usage pattern of contact lenses in indoor swimming pool and to analyze the change of refractive power, water content and pigmented surfaces of circle contact lenses when exposed to swimming pool water. Methods: A questionnaire survey on the use of c...
Purpose: Aims of this study was to investigate the usage pattern of contact lenses in indoor swimming pool and to analyze the change of refractive power, water content and pigmented surfaces of circle contact lenses when exposed to swimming pool water. Methods: A questionnaire survey on the use of contact lenses in swimming pools was conducted for one hundred forty male and female (male 30, female 110) in their teen and twenties. Six types of circle contact lenses were exposed to swimming pool water for 2, 4, and 6 hours, respectively and then their refractive power and water content were measured. The change of pigmented surfaces was further observed by a scanning electron microscope. Results: From the survey, it was revealed that 64.1% of contact lenses wearers had worn contact lenses in swimming pools and 53.8% of them had used circle contact lenses. Among the respondents, 71.4% had used swimming pools while wearing non-disposable contact lenses, 93.9% complained subjective symptoms, and 51.0% of them answered they had worn used contact lenses in swimming pools. There was a statistically significant change in refractive power of circle contact lenses when exposed to swimming pool water. However, it was confirmed that the change of refractive power according to exposure time was not significant since its change was within the allowable range of error of ${\pm}0.25D$ provided by the manufacturer. Relatively large decrease in water content of circle contact lenses with a water content of more than 50% was shown when exposed to the swimming pool water. The roughness of tinted surfaces and the indistinction of brightness and peripheral tinted zone were observed when the circle contact lenses manufactured not by sandwich method were exposed to the swimming pool water. Conclusions: Even though the tinted surfaces and water content were affected by exposure to swimming pool water, many contact lens wearers had used circle contact lenses in swimming pools. Therefore, wearing circle contact lenses in swimming pools should be controlled however, if be inevitable, wearing circle contact lenses with low water content manufactured by the sandwich method may reduce the problems.
Purpose: Aims of this study was to investigate the usage pattern of contact lenses in indoor swimming pool and to analyze the change of refractive power, water content and pigmented surfaces of circle contact lenses when exposed to swimming pool water. Methods: A questionnaire survey on the use of contact lenses in swimming pools was conducted for one hundred forty male and female (male 30, female 110) in their teen and twenties. Six types of circle contact lenses were exposed to swimming pool water for 2, 4, and 6 hours, respectively and then their refractive power and water content were measured. The change of pigmented surfaces was further observed by a scanning electron microscope. Results: From the survey, it was revealed that 64.1% of contact lenses wearers had worn contact lenses in swimming pools and 53.8% of them had used circle contact lenses. Among the respondents, 71.4% had used swimming pools while wearing non-disposable contact lenses, 93.9% complained subjective symptoms, and 51.0% of them answered they had worn used contact lenses in swimming pools. There was a statistically significant change in refractive power of circle contact lenses when exposed to swimming pool water. However, it was confirmed that the change of refractive power according to exposure time was not significant since its change was within the allowable range of error of ${\pm}0.25D$ provided by the manufacturer. Relatively large decrease in water content of circle contact lenses with a water content of more than 50% was shown when exposed to the swimming pool water. The roughness of tinted surfaces and the indistinction of brightness and peripheral tinted zone were observed when the circle contact lenses manufactured not by sandwich method were exposed to the swimming pool water. Conclusions: Even though the tinted surfaces and water content were affected by exposure to swimming pool water, many contact lens wearers had used circle contact lenses in swimming pools. Therefore, wearing circle contact lenses in swimming pools should be controlled however, if be inevitable, wearing circle contact lenses with low water content manufactured by the sandwich method may reduce the problems.
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