Mites are microscopic organisms that are not easily visible to the naked eye. There are more than 40 species of mites, including worm mites, which are mainly parasitic in human hair follicles and sebaceous glands. When mites invade the eyelash follicles and surrounding sebaceous glands, they usually cause mite blepharitis, mostly in both eyes, with a subacute or chronic course. The inflammatory reaction of the lid margin can lead to irregularity of the lid margin and even inversion or ectropion of the eyelid; 3. The skin lesions include rosacea, rosacea, seborrheic dermatitis, etc. If the eye itch is unbearable, you can use lid margin cleaning wipes to clean the lid margin or saline rinse to relieve it. If the symptoms are not relieved for a long time or if they are more severe, you usually need to go to an ophthalmologist for treatment.