The appearance of yellow particles inside the eyelids is a sign of conjunctival calculi, a relatively common condition in ophthalmology that causes a significant foreign body sensation. Treatment of this disease depends on the severity of the symptoms. If the foreign body sensation is not very pronounced, it can be treated conservatively. Because conjunctival stones are usually associated with chronic conjunctivitis, antibiotic drops can be used in the early stages to control local inflammation and some conjunctival stones can be expelled on their own. If conservative treatment does not work or does not improve in the long term, surgery can be performed in the hospital. This is a relatively simple outpatient procedure that uses an empty syringe needle to pick out the conjunctival stones from the conjunctival surface, which can effectively relieve the symptoms of foreign body sensation in the eye. After the stone is removed, antibiotic drops should be applied routinely for 3-4 days to avoid infection.