There are many types of painful eye irritation, and it depends on the specific treatment. 1. whether there is a foreign body in the eye or whether you are wearing contact lenses. If there is something in your eye, you need to take it out. 2. If there is an inflammatory reaction in the conjunctiva. If there is an inflammatory reaction in the conjunctiva, the eye can also be painful, and these symptoms need to be treated with anti-inflammatory eye drops. 3. If there are white stones in the conjunctiva of the eye, the stones need to be removed for treatment. 4. The most serious is not keratitis. If there is keratitis, the pain is more serious, and accompanied by tearing, photophobia, blurred vision and other symptoms, you need to go to the hospital for treatment.