Entropion is caused by weakness of the lower lid retractor muscle, loss of contraction of the orbital septum and lower lid skin to hold the lid orbicularis muscle, and lack of adequate support behind the eyelid in older adults with reduced orbital fat. Scarring lid entropion can occur in both upper and lower lids. There is scarring of the lid conjunctiva and lid plate due to contraction. Diagnosis: 1. Examination: The lid margin is out of normal position and curls significantly toward the eyeball, with the eyelashes subsequently inverted toward the heel, irritating the cornea and bulbar conjunctiva. 2. Due to long-term irritation, severe cases evolve into corneal ulcers, which also form corneal opacities after healing, leading to varying degrees of visual impairment and even blindness. Treatment: 1. In infants and children with entropion of the eyelid, the eyelashes are fine and soft, so the threat to the eye is not great. If the child develops eye rubbing, mucous, and eye redness (conjunctival congestion), timely surgical treatment should be considered. In principle, surgery is required for scarring and age-related degenerative entropion as long as clinical symptoms are present. 3. For those with clinical symptoms that are not surgically treated, antibiotic eye drops should be placed in the conjunctival sac (inside the eye) to prevent inflammation of the cornea and conjunctiva.