Prevention of entropion will depend on the underlying cause. If the underlying cause is treated, entropion may be prevented. Wearing protective eyeglasses when working with chemicals or tools and when playing certain sports may help prevent eye trauma.
If allowed to go untreated, the lashes irritating the eye can cause corneal abrasion, and possibly even corneal ulceration from secondary infection.
Entropion is not contagious. If the underlying cause of the entropion is an infection such as trachoma, the infection may be contagious.