近年来对可延长和增强药物在眼内疗效的较有效的运送药物的方法引起很大注意。多数是用软性别塑料(Anoplastics)制成接触镜片或插入结膜穹窿的剂型,药物从中逐渐释放,可延长与角膜接触时间和增加对眼内的穿透。但使用这类非生物降解性的别塑料存在不少困难,如价格贵,病人再利用时操作不便,且重复使用也要损坏。 In recent years, great attention has been paid to a more effective drug delivery method that can prolong and enhance the efficacy of drugs in the eye. Most are made with Anoplastics contact lenses or conjunctival vaults that gradually release the drug to extend contact with the cornea and increase penetration into the eye. However, there are many difficulties in using such non-biodegradable plastics, such as being expensive, being inconvenient to be reused, and being damaged by repeated use.