眼液和眼膏虽然使用方便,但有不少缺点,如眼药水滴入后易流出,真正起作用的仅为一小部分,且泪液循环又使药物与角膜接触时间很短,因此效果不易持久。眼膏容易污染又会影响视力,故局限于晚上使用。国内曾有限用药膜的报道,但因制备需用涂 Eye drops and eye ointment, although easy to use, but there are many shortcomings, such as eye drops dripping easy to flow out of the real role of only a small part, and tear circulation and drug contact with the cornea is very short, so the effect is not easy lasting. Ointment easy to pollute and will affect vision, it is limited to use at night. There have been reports of limited use of medicinal films in China, but they need to be applied due to preparation