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소프트콘택트렌즈 재질에 따른 눈물막 파괴시간과 고위수차의 비교
김봉환,한선희,김학준,배상아,손유진,김지현,김현지,Kim, Bong-Hwan,Han, Sun-Hee,Kim, Hak-Jun,Bae, Sang-A,Son, Yu-Jin,Kim, Ji-Hyun,KIm, Hyun-Ji 한국임상보건과학회 2019 한국임상보건과학회지 Vol.7 No.1
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.
경남지역 대학생들의 난시 교정용 소프트 콘택트렌즈의 착용에 관한 설문조사
김봉환,한선희,김대현,변상현,채정임,김재석,황윤정,김학준,Kim, Bong-Hwan,Han, Seon-Hee,Kim, Dae-Hyeon,Byeon, Sang-Hyeon,Chae, Jeong-Im,Kim, Jae-Seok,Hwang, Yun-Jeong,Kim, Hak-Jun 한국임상보건과학회 2015 한국임상보건과학회지 Vol.3 No.3
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.
김봉환,한선희,박재만,이정수,정지환,윤남경,김형수,Kim, Bong-Hwan,Han, Sun-Hee,Park, Jae-Man,Lee, Jeong-Soo,Jeong, Ji-Hwan,Yoon, Nam-Kyung,Kim, Hyung-Soo 한국임상보건과학회 2021 한국임상보건과학회지 Vol.9 No.2
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.
김봉환,Kim, Bong-Hwan 대한양돈협회 1988 養豚 Vol.10 No.6
사료에 의한 곰팡이 중독은 아플라톡신 중독, 제라레논 중독, 맥각중독, 진균성 심장병 등이 있으며, 중독이 되면 식욕부진, 산자수 감소, 유사산 우유증(비유량 감소)등의 증상이 나타난다.