What is entropion? Entropion is an abnormal curl of the eyelid, especially the lid margin, toward the eyeball. When there is a certain degree of entropion, the eyelashes are also turned back toward the eye. This is why entropion and ingrown eyelashes often coexist. Clinical manifestations of entropion There are three types of entropion: congenital, spastic (age-related), and scarring. Congenital entropion is often bilateral, while spastic and scarring entropion can be unilateral. In these cases, the lid margin curls toward the eyeball and the eyelashes turn back toward the eyeball, causing the eyelashes to rub against the cornea and conjunctiva during eye movement, causing damage to the cornea and conjunctival epithelium, and if secondary infection develops, it can cause corneal ulceration. Patients experience photophobia, tearing, foreign body sensation, tingling, eyelid spasm, and abrasive sensation. Treatment of entropion The principles of treatment differ for different types of entropion. 1. Congenital lid entropion: Some of these can disappear on their own with age, so there is no need to rush to surgery. If the child is 5 to 6 years old and the eyelashes are still turned in and the cornea is severely irritated, surgery may be considered. 2. Age-related entropion and scarring entropion can be treated surgically. 3. Acute spastic entropion: active control of inflammation.