• Study on Functional Soft Contact Lenses with Blue Light Reducing Capability
  • Junseok Lee , Dae Gyu Song*, Hong Jin Choi and Jeong Koo Kim

  • Department of Biomedical Engineering, Inje University, Gimhae, Gyeongnam 50834, Korea
    *Industry-Academic Cooperation Foundation, Inje University, Gimhae, Gyeongnam 50834, Korea

  • 청색광 감소 기능성 소프트 콘택트렌즈에 관한 연구
  • 이준석 · 송대규* · 최홍진 · 김정구

  • 인제대학교 의공학과, *인제대학교 산학협력단

  • Reproduction, stored in a retrieval system, or transmitted in any form of any part of this publication is permitted only by written permission from the Polymer Society of Korea.


Abstract

This study developed a functional soft contact lens capable of reducing blue light by incorporating beta-carotene, a natural antioxidant known for blue light absorption. Soft lens films were fabricated using a 2-hydroxyethyl methacrylate (2-HEMA) polymer with various beta-carotene concentrations, and their optical, physical, and biological properties were evaluated. The beta-carotene-incorporated lenses effectively reduced blue light transmission while maintaining transparency and mechanical integrity up to 500 μM of beta-carotene. Hydrophilicity of the lenses slightly decreased at higher beta-carotene content, but beta-carotene release into solution was minimal. No cytotoxic effects were observed in cell viability tests; in fact, higher beta-carotene concentrations showed enhanced cell proliferation, likely due to antioxidant effects. These results demonstrate that beta-carotene functionalized soft contact lenses can mitigate blue light exposure without compromising lens performance, though further work is needed to improve lens hydrophilicity for wearer comfort.


본 연구에서는 청색광 흡수와 항산화 기능을 가진 천연물질 베타카로틴을 소프트 콘택트렌즈에 첨가하여 청색광을 저감시키는 기능성 렌즈를 개발하였다. 2-hydroxyethyl methacrylate (2-HEMA) 기반 폴리머에 다양한 농도의 베타카로틴을 첨가하여 제작한 렌즈 필름의 광학 및 물리적 특성을 평가한 결과, 베타카로틴 함유 렌즈는 투명도를 유지한 채 청색광 투과를 효과적으로 감소시켰으며 렌즈의 기계적 성질에도 유의한 변화가 없었다. 다만 베타카로틴 함량이 증가할수록 표면 친수성은 다소 감소했으나, 렌즈로부터의 베타카로틴 용출은 검출 한계 수준으로 매우 낮았으며, 세포 독성 역시 관찰되지 않았다. 이러한 결과를 통해 베타카로틴 함유 기능성 소프트 콘택트렌즈는 청색광 감소용으로 유망하며, 향후 친수성 개선을 통해 착용 적합성을 높일 필요가 있다.


Keywords: blue light, soft contact lens, beta-carotene, 2-hydroxyethyl methacrylate, antioxidant.

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2024 Impact Factor : 0.6
  • Indexed in SCIE

This Article

  • 2025; 49(6): 846-854

    Published online Nov 25, 2025

  • 10.7317/pk.2025.49.6.846
  • Received on Sep 15, 2025
  • Revised on Sep 29, 2025
  • Accepted on Oct 17, 2025

Correspondence to

  • Hong Jin Choi and Jeong Koo Kim
  • Department of Biomedical Engineering, Inje University, Gimhae, Gyeongnam 50834, Korea

  • E-mail: hjchoi@inje.ac.kr, jkkim@inje.ac.kr