The adverse effects on the ocular surface caused by long-term antiglaucomatous medications or filtering surgery have been documented by many researchers.However,in our clinical work emphasis on this issue is far from enough.Both antiglaucomatous drugs and filtering surgery can cause tear film dysfunction and conjunctival or corneal epithelium damage,which is the main cause of glaucomatous patients'ocular uncomfortable complaints.Early diagnosis and prompt management of the ocular surface dysfunction is of great importance for us to improve patients' local tolerance and decrease their ocular uncomfortable symptoms.