Lower eyelid entropion is categorized into three types according to the cause of formation: congenital entropion, spasmodic entropion, and scarring entropion. 1. Congenital lower eyelid entropion: mostly seen in infants and young children, mainly due to the underdevelopment of the bridge of the nose, the lower eyelid orbicularis oculi muscle adipose tissue is thicker, or blepharoplastic dysplasia leads to lower eyelid entropion. 2. Spasmodic lower eyelid entropion: mostly seen in the elderly. Due to the elderly eyelid skin laxity, lower eyelid muscle strength decline, eyelid muscle strength and orbicularis oculi muscle contraction force imbalance, coupled with the elderly orbital fat reduction, lack of support for the eye, when there is an inflammatory stimulation of the ocular surface, the orbicularis oculi muscle spasmodic contraction will lead to spasmodic lower eyelid entropion. 3. Scarring lower eyelid entropion: occurs at any age, after trauma and severe inflammation of the eye produces scarring, scar contraction can lead to scarring lower eyelid entropion. If you have lower eyelid entropion, you need to go to a specialized ophthalmology hospital to find out the cause of the condition and get targeted treatment under the doctor’s guidance.