Sleeping with eyes open can be seen clinically as a normal phenomenon, for example, in infants and young children who sleep and may open their eyes in a light sleep state, but for a relatively short period of time. In adults, the eyes may also open during dreaming, but for a relatively short period of time. If you sleep with your eyes open for a long period of time, it is considered a pathological condition. For common diseases of sleeping with eyes open, such as facial nerve palsy, due to facial nerve palsy, which leads to damage of the ophthalmic nerve, the patient can have incomplete closure of the upper eyelid and can appear white when sleeping. Patients with intracranial tumors that affect the nerves around the eyes may also sleep with their eyes open. In hyperthyroidism, the protruding eyeballs can cause the eyes to close incompletely during sleep, and the patient can also sleep with the eyes open. If you sleep with your eyes open for a long time, it is recommended that you see a hospital for a systematic examination.