If you have a history of a foreign body entering your eye, it is recommended that you go to the hospital and have your doctor carefully examine the foreign body under the slit lamp, and if there is a foreign body, remove it and apply local antibiotic drops or ointment for anti-inflammatory symptomatic treatment. Second, lid conjunctival stones. If the secretions from the lid gland are not discharged smoothly for a long time and block the glandular ducts, lid conjunctival stones may form. Thirdly, the inverted eyelashes may repeatedly rub the eyeball and cause foreign body sensation in the eye.