Under normal circumstances, the structure of the eye does not appear to rattle or make other sounds. The eyes can rattle, and it usually occurs when the eyes are rubbed. This condition is due to the presence of some tears in the conjunctival sac itself, and during eye rubbing, these tears are mixed with air in the conjunctival sac for squeezing, and a squeaking sound occurs. This is a sound formed by the rapid squeezing through the fluid due to the air mixed in the conjunctival sac. This condition does not indicate a definite disease or other pathological condition of the eye, so it is not a condition that requires pharmacological intervention or treatment. It is important to note that once this condition is detected, continuous rubbing of the eyes is not recommended. Once fine dust and particles are mixed in the conjunctival sac, frequent rubbing of the eyes may lead to secondary infections on the one hand and damage to the eye surface on the other.