70年代后塑料滴眼瓶逐渐取代玻璃滴眼瓶。湿润的塑料滴眼瓶滴咀部被病人的眼睑或手指接触会造成微生物污染,而且在放置时瓶内防腐剂接触不到滴咀,因此有必要使用作用较强的防腐剂以避免污染。英国副药典(BPC 1979)推荐使用0.002%的醋酸或硝酸 70s after the plastic eye drops gradually replace the glass eye drops bottles. Moisten plastic drip bottle drip Tsui Ministry of the patient’s eyelids or finger contact will cause microbial contamination, and when placed in the bottle of preservative contact droplet, it is necessary to use a strong preservative to avoid contamination. The British Pharmacopoeia (BPC 1979) recommends 0.002% acetic acid or nitric acid