Dry eyes and foreign body sensation are mostly seen in the following cases: 1. foreign body into the eye, it is necessary to carefully turn the eyelid and find and check the conjunctival sac, once the foreign body is found it needs to be removed and then treated with local antibiotic drops according to the degree of damage to the eye surface. 2. inverted eyelashes, repeated irritation of the eye surface by inverted eyelashes can cause dry eyes and foreign body sensation, it is necessary to remove the inverted eyelashes or electric eyelash capsule, severe and extensive 3. Electrophthalmia, if irradiated by ultraviolet light or engaged in welding work without attention to protection, can lead to diffuse damage to the corneal epithelium, resulting in dry eyes and foreign body sensation, which can be accompanied by photophobia and tearing, requiring topical antibiotic drops, combined with drugs to promote corneal epithelial repair, most of which can be recovered within 2-3 days. 4. Conjunctivitis, which can appear as conjunctival follicles or papillae, leading to foreign body sensation in the eye, requires symptomatic treatment according to the different types of conjunctivitis.