A foreign body sensation in the eye that grinds painfully is not usually due to uveitis, but is usually due to keratitis, corneal foreign bodies, conjunctival stones, inverted eyelashes, and dry eye. Uveitis is one of the most common autoimmune disorders of the eye, causing blurred vision, redness, swelling and pain. However, there is usually no foreign body sensation in the eye, grinding pain and these manifestations. Foreign body sensation and grinding pain in the eyes are usually caused by corneal damage, such as keratitis, corneal foreign body, dry eye, inverted eyelashes, conjunctival stones and other diseases. Patients need to go to the ophthalmology department of the hospital in time, after a detailed examination by the doctor to diagnose the specific cause, and then can take targeted treatment to eliminate the symptoms.