If you have something in your eye that you can’t get out, there are possible scenarios: First, the foreign body is embedded in the cornea or conjunctival tissue, rather than free in the conjunctival sac, and cannot be flushed out by flushing. If rubbing hard, there is a possibility that the corneal tissue or conjunctival tissue will be scratched, so do not rub your eyes first when something is invading inside your eyes. Second, it is possible that the foreign body is free in the conjunctival sac, but hidden in the upper and lower conjunctival fornix, ordinary flushing can not reach the range, and the more you rub the foreign body will be hidden in the fornix, you need to be in the ophthalmology, by the doctor flush conjunctival sac. Thirdly, it is possible that the nodules in the eye itself, such as stones in the conjunctival tissue of the lid, will show the symptoms of foreign body sensation if the stones protrude from the surface of the conjunctival tissue, and if the patient thinks it is something in the eye and rubs it hard, it will scratch the corneal tissue. In this case, the stone should be removed by a physician in the ophthalmology department under superficial anesthesia.