Prolonged hot compresses on the eyes are mainly harmful to aggravate bleeding, burns and aggravate the spread of inflammation. 1. aggravate bleeding: within 24 hours after the injury, if the patient line eye local hot compresses, will make the local bleeding aggravated, causing bruising, swelling symptoms. 2. Scald: hot compresses patients must pay attention to the temperature control, if the temperature is not appropriate will aggravate the injury, such as the temperature is too high, will cause the patient’s skin around the eye burns. 3. aggravate the spread of inflammation: if the patient due to bacterial infection eye swelling, improper hot compress, will make the inflammation spread, aggravate the symptoms. It is recommended that patients with eye discomfort consult a doctor in a timely manner to assess their condition, follow the doctor’s instructions for treatment, and do not apply heat without authorization to avoid delaying their condition.