On the day of World Glaucoma Eye Day, many patients are very interested in knowing some questions related to glaucoma, so I am here to give you some simple answers. Why are some glaucoma cases not diagnosed even after a complete set of tests? Glaucoma is a very insidious and dangerous blinding eye disease, so early diagnosis is very important; however, since glaucoma requires lifelong treatment once diagnosed, doctors are very careful in diagnosing glaucoma to avoid adding unnecessary burden to the patient. The premise of the full set of screening tests is that the patient has some suspected conditions of glaucoma that do not exactly match the clinical diagnosis and requires several repeated follow-up reviews to finally rule out the suspicion or identify the suspicion, so the doctor will recommend that the patient follow the medical advice for follow-up under close observation and not give the diagnosis and treatment for the time being. For suspected glaucoma that cannot be diagnosed, how often do I need to be rechecked? Generally speaking, if the IOP is normal and the results of fundus and visual field examinations only have some suspicious features, they can be reviewed once a year; if the IOP is high and fluctuates, fundus and visual field examinations should be reviewed once every three months to six months. What is found in the re-examination to confirm the diagnosis? The diagnosis is confirmed if the repeat exam reveals elevated IOP or increased fluctuations with persistent damage to the optic nerve fibers in the fundus and/or visual field. What is the glaucoma provocation test? How is it helpful in confirming the diagnosis? Who is it for? Are there any risks? The Glaucoma Provocation Test is designed to perform a clinical provocation procedure for suspected glaucoma to see if the results have a risk of elevated glaucomatous intraocular pressure, thus capturing the risk of a glaucoma attack to provide a basis for early diagnosis and early intervention for treatment. Applicable to patients with suspected glaucoma, the clinical safety of the excitation test is not a concern for patients as it is performed under the monitoring of a healthcare professional. Can medication be started in suspected glaucoma without a confirmed diagnosis? The premise for medication is determined by a specialist based on an assessment of the patient’s risk of developing or progressing to glaucoma. Some patients who are judged to be at high risk will be given appropriate medication based on their condition.