Dizziness, dry eyes, sleepiness and fatigue may be related to lack of sleep, or may be caused by glaucoma and insufficient blood supply to the brain. 1. Lack of sleep: If patients often stay up too late in the recent past, resulting in insufficient sleep and causing visual fatigue, it may cause patients to show discomfort such as dizziness, dry eyes, sleepiness and fatigue, and patients may also have headache, eye pain and other uncomfortable symptoms. 2. Glaucoma: During acute attack of glaucoma, the intraocular pressure of the patient rises, and the patient may suffer from eye distension and pain, dizziness, dry eyes, sleepiness and fatigue, and may be accompanied by visual acuity loss, visual field defect and other symptoms. 3. Insufficient cerebral blood supply: Due to insufficient supply of blood and oxygen to the brain tissue, patients may suffer from dizziness, dry eyes, drowsiness and fatigue, which may be accompanied by headache, memory loss and other symptoms. It is recommended that patients with persistent symptoms such as dizziness, dry eyes, drowsiness and fatigue should consult a doctor in time to assess their condition and take treatment under the guidance of a doctor.