목 적: 안구건조증의 일반적인 치료제로 사용되는 포비돈과 히알루론산염이 포함된 인공누액이 하이드로 젤 콘택트렌즈에 미치는 영향을 다양한 조건에서 분석 하였다. 방 법: 본 연구에 사용된 친수성 하이드로젤 콘택트렌즈의 제조를 위해 교차결합제인 EGDMA(ethylene glycol dimethacrylate)와 HEMA(2-hydroxyethyl methacrylate)를 기본 조합으로 사용하여 참조물을 제조하였다. 또한 20%의 NVP(n-vinyl-2-pyrrolidone)와 MMA (methyl methacrylate)를 첨가하여 함수율 별로 다양하게 중합하였다. 공중합된 콘택트렌즈를 인공누액에 각각 1시간, 2시간 그리고 72시간 침지시킨후 제조된 렌즈의 함수율과 접촉각을 측정하였다. 결 과: 제조된 콘택트렌즈의 기본 물성을 측정한 결과, 포비돈 참조물의 경우, 함수율 27.22~48.13%, 접촉각 70.48~41.43°의 범위로, 히알루론산염 참조물의 경우, 함수율 26.42~48.42%, 접촉각 70.21~44.66°의 범위로 나타났다. 또한 제조된 콘택트렌즈를 인공누액에 침지시킨 후 측정한 물리적 특성은 포비돈을 포함한 인공누액의 경우, 함수율 26.10~47.90%, 접촉각 43.54~81.23°의 범위로, 히알루론산염을 포함한 인공누액의 경우, 함수율 24.89~48.35%, 접촉각 38.56~68.58°의 범위로 나타났다. 침지 시간에 따른 물성 변화는 포비돈의 경우 함수율의 감소 및 접촉각의 증가, 히알루론산염의 경우 함수율 및 접촉각의 감소를 나타내었다. 결 론: 포비돈과 히알루론산염을 포함한 인공누액은 친수성 하이드로젤 콘택트렌즈의 함수율과 접촉각에 영향을 주는 것으로 나타났다.
Purpose: The impacts of artificial tear that is a common material for the treatment of dry eye including povidone and hyaluronic acid on the hydrogel contact lens were analyzed in various conditions. Methods: The cross-linking agent, EGDMA(ethylene glycol dimethacrylate) and HEMA (2-hydroxyethyl methacrylate) were determined to be used as the basic combination to produce a soft hydrogel contact lens. Also, 20% each of NVP (n-vinyl-2-pyrrolidone) and MMA (methyl methacrylate) were added to this combination for classification of water content. The copolymerized contact lenses were stored in artificial tear for 3, 5, 10 min. and 1, 2, 72hrs. respectively. Also, the physical properties such as water content and contact angel of produced contact lenses were measured. Results: The measurement of the physical properties of the Ref. sample for povidone showed that water content and contact angle were in the range of 27.22~48.13% and 70.48~41.43°, respectively. Also, the measurement of Ref. sample for hyaluronic acid showed that water content and contact angle were in the range of 26.42~48.42% and 70.21~44.66° respectively. In addition, the measurement of physical property after soaking into artificial tear containing povidone, the water content and contact angle were in the range of 26.10~47.90% and 43.54~81.23° respectively. Also, in case of the measurement of sample soaked in hyaluronic acid, the water content and contact angle were in the range of 24.89~48.35% and 38.56~68.58°, respectively. In case of povidone, the changes of the physical property with soaking time showed decrease of water content and increase of contact angle. For hyaluronic acid, the measurement showed the decrease of water content and contact angle. Conclusions: Artificial tear including povidone and hyaluronic acid influenced on water content and contact angle of a hydrogel contact lenses.