6Fazeli MR, Nejad HB, Mehrgan H, et al. Microbial contami nation of preserved ophthalmic drops in out patient depart- ments : possibility of an extended period of use [J]. Daru, 2004, 12 (4) :152.
7Rahman MQ. Microbial contamination of preservative free eye drops in multiple application containers[J]. Br J Ophthalmol, 2006,90 (2) : 139-141.
9Fazeli MR,Nejad HB,Mehrgan H,et al. Microbial contaminationof preserved ophthalmic drops in out patient departments : possi-bility of an extended period of use[ J]. Daru,2004,12(4) :152.
10Tsuyoshi KAMAKO, Masayuki OYA, Toshiaki NISHIHATA.Prediction of Water Loss from Plastic Container for Eye-drop inVarious Storage Conditionsf J] . PDA Journal of GMP and Valida-tion in Japan,2001,3(2) :97-103.
