White dots on the eyes can be caused by many reasons, and there are several cases: 1. If white dots appear on the eyelids without any abnormalities in the eyelid skin, it could be fatty grains; 2. If there is a red, swollen, painful lump on the eyelid skin at the same time, it is usually considered to be caused by blepharitis, also known as wheals, and when white dots appear, it means that the pus is about to mature; 3. If white dots appear inside the eyes, it is important to exclude If white dots appear on the black eye, along with photophobia and pain, it may be an attack of keratitis; 5. If the white dots on the black eye have existed for a long time and there is no discomfort, it may be a corneal white spot, which may be congenitally caused or a scar left after eye trauma or inflammation; 6. white spots appear, it may also be vesicular conjunctivitis, which is usually accompanied by increased red blood around it.