The principle of glaucoma treatment is “early detection, early diagnosis and early treatment”. However, most people are not aware of the symptoms of glaucoma, which may lead to missing the best time for glaucoma treatment. Early onset of glaucoma is usually accompanied by symptoms that warn people that there is something wrong with your eyes! So what are the signs of early glaucoma symptoms? The following is a brief introduction: 1, emotional excitement or stay too long in the dark (such as watching movies, television or working in a dark room), there will be eye distension, headache, blurred vision, as if there is a layer of clouds in front of the eyes, which is an early symptom of closed angle glaucoma. After repeatedly appearing for many times, it may suddenly enter the acute grand mal period. 2, usually drink more water. Glaucoma patients have a headache when they drink more than 300 ml of water at one time. This occurs because it is thought that in the process of drinking water quickly and in large amounts, which leads to a decrease in osmotic pressure caused by blood dilution, the atrial fluid entering the eye will also increase, which causes an increase in intraocular pressure. In addition, if one eye has been diagnosed as glaucoma, the other eye must be closely observed. 3. The appearance of colorful halos when looking at lights at night, like a rainbow in the sky after a rain, is medically known as rainbow vision. This is due to the rise in intraocular pressure, corneal edema and resulting changes in corneal refraction. Vision gradually decreases, optometry vision correction less than 1.0 (logarithmic visual acuity table for 5.0), especially highly myopic people, wearing moderate glasses still often have a headache and eye distension. 4, after waking up in the morning to read books and newspapers more strenuous, easy to nose root soreness and orbital forehead swelling pain. Because the IOP of normal people has a pattern of diurnal fluctuations, generally high in the morning and low at night. Glaucoma patients have a greater fluctuation in IOP over 24 hours, so IOP is higher in the morning and symptoms will appear. Knowing what symptoms there will be in the early stages of glaucoma, then we can take care of our eyes as early as possible to avoid becoming more serious glaucoma!