목적: 대학생을 대상으로 자외선을 포함한 청색광과 같은 유해광선에 대한 지식과 인식도를 알아보고자 하였다. 방법 : 2023년 4월부터 5월까지 온라인 설문 조사에 응답한 충남지역 대학생 103명을 대상으로 하였다. 설문 은 대상자의 일반적 특성에 관한 문항, 자외선과 청색광 차단렌즈의 착용실태에 대한 문항, 자외선과 청색광에 대 한 지식도 및 인식도 문항, 그리고 차단렌즈 선택을 위한 가이드라인의 요구도 문항으로 구성된 총 15문항의 설문 도구를 사용하였다. 통계분석은 SPSS 18.0을 사용하였다. 결과 : 자외선 차단을 위해 안경이나 콘택트렌즈를 착용하는 비율은 56.3%로 나타났으나 청색광 차단 안경이 나 콘택트렌즈를 사용하는 경우는 35.9%로 상대적으로 낮은 비율로 나타났다. 자외선과 청색광의 유해성에 관한 지식도는 각각 2.58±0.91, 2.44±0.98로 조사되었으며, 자외선과 청색광으로부터 눈 보호가 중요하다고 생각하 는 항목의 평균 점수는 각각 3.49±0.61, 3.35±0.68점으로 조사되어 자외선과 청색광 차단의 중요성에 대한 인 식도는 높은 것으로 나타났다. 결론 : 대학생들의 자외선과 청색광에 대한 지식도와 인식도는 높은 수준이었으나 청색광 차단렌즈에 올바른 선택법에 대한 지식은 낮은 수준을 나타냈다. 이에 청색광 차단렌즈의 올바른 선택을 위한 교육 강화와 가이드라 인의 구축이 필요할 것으로 판단된다.

목적 : 국내에서 유통되고 있는 하이드로겔 콘택트렌즈의 광투과율을 측정하여 가시광선 및 자외선 차단 기준 규격에 부합하는지 알아보고자 하였다. 방법 : 자외선 차단 표시가 있는 콘택트렌즈를 포함한 하이드로겔 콘택트렌즈 14종을 임의로 선정하였다. 실험 렌즈의 광투과율 측정범위는 가시광선, UV-A 및 UV-B로 하였다. 가시광선은 ANSI Z80.20:2004를 참고하였고, 자외선은 ISO 와 FDA 기준을 참고하여 비교하였다. 자외선 차단 표시가 있는 렌즈의 경우 기준에 따라 Class 1, Class 2로 분류하였다. 결과 : 실험렌즈 14종의 가시광선 광투과율 측정결과 투명 콘택트렌즈 7종 중 4종의 렌즈는 88% 이하로 나타났 으나, 범위에 크게 벗어나지 않았다. 그리고 컬러 콘택트렌즈는 7종 모두 70% 이상으로 나타나 기준규격에 부합하 였다. 자외선 투과율 측정결과 자외선 차단 표시가 있는 콘택트렌즈 10종 중 3종(UD-4, 5, 6)은 UV-A에서 86.67~ 88.59%, UV-B에서 82.41~83.72%로 나타났다. 이 렌즈들의 자외선 광투과율 값은 ISO 및 FDA 기준규격에 부 합하지 않는 것으로 나타났다. 결론 : 국내 유통되고 있는 자외선 차단 콘택트렌즈 중 ISO 및 FDA 기준규격에 부합하지 않은 제품이 존재하 는 것으로 나타났으며, 모두 국내제품인 것으로 나타났다.

Purpose: The physical and optical characteristics for copolymers produced by adding 3-Iodoaniline and 3-chloroaniline to the various monomers commonly used for ophthalmic contact lenses were investigated. Methods: The basic hydrogel ophthalmic lens material with addition of 3-Iodoaniline and 3-chloroaniline respectively were polymerized by heating at 80℃ for 20 mins, and then 110 ℃ for 40 mins. To produce contact lenses, a cast mould method was used. The produced contact lenses samples underwent the pre-process by being hydrated in 0.9% NaCl saline for 24 hours. Afterward, their physical and optical properties were measured. Results: The results showed that the average value of refractive index increased and the water content decreased as the ratio of additive increased. The measurement of the optical transmittance of the copolymerized polymer with addition 3-Iodoaniline showed that the transmittance for visible ray, UV-B and UV A is 89.4~90.8%, 2.0~15.2% and 40.6~67.8%, respectively. Also, for samples with addition 3-Iodoaniline, the transmittance for visible ray, UV-B and UV-A was in the range of 89.8~90.6%, 5.0~22.2% and 57.6~73.8% respectively. Conclusions: It is expected that the results would contribute to a wider application of contact lenses containing aniline group which are to be used as ultraviolet ray blocking contact lenses.

The silica nanoparticles were used as support of catalyst, filling material, electronic assembler, thin film material, and sensor material. And, the titania nanoparticles were used as pigment, dielectric substance, sensor and photocatalyst. In this paper, the spherical composite particles of TiO2/SiO2with narrow size distribution and phase pure were synthesized by ultrasonic spray pyrolysis method from TiOSO4 and colloidal silica solution. Using ultrasonic apparatus, this starting solution was vaporized to droplets, and these droplets were induced into tube furnace by carrier gas. The resulting composite powder was characterized by scanning electron microscopy, X-ray diffraction analysis, TG-DTA, in vitro sun protection factor(SPF) and BET surface area analysis.

The ultraviolet blocking agents used to skincare are largely classified ultraviolet scattering agent and ultraviolet absorbent agents. There are UVC, UVB, and UBA in ultraviolet ray(UV) showing shorter wavelength than visible light. Both visible light and UVA give rise to 1st dark-skinned phenomena. On exposure of the skin to UV, phenomena of skin variation are termed sunburn or suntan. There are chronic and acute adverse reactions in skin response to UV. The latter is caused by UVB, which has mainly effects on the skin. But lately due to destruction of ozone layer, UVA has more serious irritation on the skin than UVB. In this paper spectrometric properties of UV absorbent agents such as PABA, octyl-PABA, Urocanic acid, and 2-hydroxy-4-methoxy benzophenone in vitro have been investigate. As results, it was found that the three fomer were more suitable than the last. UV scattering measurements on the sample used inorganic pigments showed that pigments containing titanium dioxide had a better scattering effects than the inorganic pigments such as Fe2O3, Al2O3, etc.

Background : Ginseng (Panax ginseng C. A. meyer) is a medicinal herb which has been used for prevention and treatment of diseases in Korea, China and Japan for a long time. Ginseng is well known to have effects such as immunity enhancement, anticancer, antioxidative effect and blood circulation improvement. These pharmacological effects of ginseng have been reported to be due to various ginsenoside components. Recently, many studies have been actively conducted to identify the major components and functionalities of ginseng berry. Ginsenoside, a representative active ingredient of ginseng, is distributed in various parts of ginseng. However, contents of certain ingredient such as ginsenoside Re which have antidiabetic effect is higher in ginseng berry. This study was conducted to compare ginsenoside content and UV blocking effect according to the color of ginseng berry. Methods and Results : The ginseng berry extracts for the component analysis and UV-blocking effect test were obtained by harvesting the ginseng berry by color in 4-years-old ginseng cultivated, and then removing the seeds and extracting only the flesh of the ginseng berry and the peel with methanol. Ginsenosides analysis was carried out by dissolving 100 ㎎ of the extract in 2 ㎖ of methanol, filtering it with a 0.50 ㎛ filter and using it as a sample for HPLC analysis. Analysis of ginsenoside content showed that the total ginsenoside and ginsenoside Rb2 content of yellow ginseng berry were 23.9 and 2.9 ㎎/g, while those of red berry was 19.6 and 2.3 ㎎/g, respectively. The UV blocking effect of yellow ginseng berry was 17.4%, which was higher than that of red berry. Conclusion : The ginsenoside content and UV blocking effect of yellow ginseng berry were superior to those of red berry. These results suggested that yellow berry is more useful as cosmetic material for UV protection.