When patients get up in the morning with decreased vision, it may be caused by physiological factors, and may also be related to pathological factors, such as glaucoma, vitreous hemorrhage and so on. 1. Physiological factors: if the patient sleeps on his back, resulting in localized pressure on the eyes, the next morning, there will be a transient loss of vision, but generally rest for a while can be improved, do not need special treatment. 2. Pathological factors: glaucoma patients can increase intraocular pressure, corneal edema, which leads to vision loss. In addition, if vitreous hemorrhage and central retinal artery blockage occur at night, patients may suffer from vision loss or even blindness. It is recommended that patients with vision loss consult a regular hospital in time to assess their condition and follow the doctor’s instructions for treatment.