Black spots in the eyes may be nevus, intraocular pigmentation, conjunctival or corneal foreign bodies. 1. Melanotic nevus: it is composed of nevus cells, in the eye position preferably occurs in the eyelid and conjunctiva, some patients will gradually increase with age, the boundary is clear, there may be a bulge, and it is generally a benign structure. 2. Intraocular pigmentation: Most of the black spots on the white of the eye are pigmentation of the conjunctiva, generally related to age and sun exposure, it has no effect on the eyes and is not accompanied by any uncomfortable symptoms. 3. Conjunctival or corneal foreign body: When there is a foreign body in the patient’s conjunctiva or cornea area, there will be obvious black spots on the eyes, which will also be accompanied by local symptoms such as congestion, tingling, foreign body sensation, and may even affect the level of vision. There may be other reasons for the black spots in the eyes, so patients are advised to consult a doctor in time to clarify the specific cause, and if necessary, carry out the appropriate treatment.