Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Madhavnagar, Manipal 576104, Karnataka, India.
Mechatronics Lab, Department of Electronic Systems Engineering, Indian Institute of Science, Bengaluru 560012, Karnataka, India.
Eur J Pharm Biopharm. 2021 Apr;161:80-99. doi: 10.1016/j.ejpb.2021.02.007. Epub 2021 Feb 16.
In contrast to the conventional ocular formulations, contact lenses are well known for their diverse applications ranging from bio-sensing, prevention of myopia, cosmetics, and drug delivery. With a tremendous change in the lifestyle, contact lenses for therapeutic purposes have increased several fold. Contact lenses as medicated lenses suffer from several disadvantages, and to overcome the same numerous approaches have been explored. Researches worldwide have come a long way from cyclodextrin-based and vitamin E-based modified contact lenses to bioinspired approaches to enhance the effectiveness of the drug-eluting contact lenses. The bioinspired approach exploits bioinspired polymeric systems to enhance biocompatibility, specific molecule recognition technique by molecular imprinting, or stimuli-responsive system to improve the biocompatibility, drug loading, and drug delivery efficacy of the drug-eluting contact lenses. Moreover, recent innovations in ocular therapeutics such as nanowafers and microneedle contact lenses, and ocular patches have gained tremendous attention in ocular therapeutics. Another potential application of the contact lenses are smart lenses applied in the biosensing and diagnosis of various ocular disorders. The review summarizes and discusses the widespread therapeutic applications of next-generation contact lenses and various fabrication approaches, including its clinical implications, efforts taken by researchers in exploring the novel materials and diverse forms of the lenses, mechanisms of drug release, clinical trials, and their toxicity and safety concerns.
与传统的眼部制剂相比,隐形眼镜以其广泛的应用而闻名,包括生物传感、预防近视、化妆品和药物输送。随着生活方式的巨大变化,治疗用途的隐形眼镜的需求增加了数倍。作为药物隐形眼镜,它们存在一些缺点,为了克服这些缺点,人们探索了许多方法。全球的研究人员已经从基于环糊精和维生素 E 的改良隐形眼镜,发展到基于仿生方法来提高药物洗脱隐形眼镜的效果。仿生方法利用仿生聚合物系统来提高生物相容性、通过分子印迹实现特定分子识别技术,或利用刺激响应系统来提高药物洗脱隐形眼镜的生物相容性、药物负载和药物输送效果。此外,最近在眼用治疗学方面的创新,如纳米片和微针隐形眼镜以及眼贴,在眼用治疗学方面引起了极大的关注。隐形眼镜的另一个潜在应用是智能隐形眼镜,它应用于各种眼部疾病的生物传感和诊断。本综述总结和讨论了下一代隐形眼镜的广泛治疗应用和各种制造方法,包括其临床意义、研究人员在探索新型材料和隐形眼镜的多种形式方面所做的努力、药物释放机制、临床试验以及它们的毒性和安全问题。