Fear of sunlight, eyes can not open, should first clarify the cause, for the cause of the treatment, common causes of visual fatigue, dry eye, eye inflammation, etc., in the treatment of the main attention to rest, for the primary cause of the application of drug therapy, and so on. 1. Pay more attention to rest: If it is due to visual fatigue that leads to prolonged over-adjustment of the ciliary muscle of the eyes, causing fear of sunlight and inability to open the eyes. In this case, we should pay attention to rest, avoid staying up late, reasonable eye use, especially to avoid prolonged close-distance eye use, which is conducive to relieving visual fatigue and improving the above symptoms. 2. Medication: If you are afraid of sunlight and can’t open your eyes due to dry eye or eye diseases, you need to take medication for the cause of the disease. (1) Dry eye disease: If dry eye disease causes excessive dryness of the eyes, resulting in fear of sunlight and inability to open the eyes, can be directed by a doctor to apply artificial tears for treatment, such as polyvinyl alcohol eye drops, sodium vitrate eye drops, etc., which is conducive to the relief of dry eye disease, so that the above symptoms can be improved. (2) Ocular inflammation: if the fear of sunlight and inability to open the eyes are caused by conjunctivitis, keratitis and other ocular inflammatory diseases, if it is caused by bacterial infection, use tobramycin eye drops, ofloxacin eye drops; if it is caused by viral infection, it is necessary to apply ganciclovir eye drops, acyclovir eye drops and so on, which is conducive to the inflammation subsiding and improving the clinical symptoms. Fear of sunlight, eyes can not be opened, may also be related to other factors, if accompanied by other symptoms of discomfort, it is recommended to seek medical attention as soon as possible, after diagnosis of the cause, targeted treatment.