Inverted eyelashes are caused by congenital factors, eye diseases such as blepharitis, etc. Eyelashes grow backward and can touch the eyeball, causing patients to experience eye pain, photophobia and other eye discomfort symptoms. 1. Congenital factors: such as congenital anomalies, etc., after the birth of the child, inverted eyelashes can appear. 2. Ocular diseases: due to scar formation in the eyelid margin or eyelid area, the patient’s eyelashes are reversed towards the eyeball, thus forming inverted eyelashes, and common diseases include blepharitis, eyelid trauma and so on. In addition, other causes of lid inversion (e.g., trachoma, lid burns, etc.) can also cause patients to develop inverted eyelashes. It is recommended that patients with inverted eyelashes seek prompt medical attention to evaluate their condition and follow the doctor’s instructions for treatment.