Because some infants are fat, with flat nasal roots and hypoplasia, and some children have epicanthus or epicanthus, it can cause trichiasis or entropion of the lower eyelid, and the lighter ones can heal themselves with age. Because the baby's eyelashes are generally small and soft, the irritation symptoms are generally not obvious. When conservative treatment fails, surgery can be considered, usually after the child is 3 years old. Some children with congenital entropion, with the growth of age, the development of the bridge of the nose, often can disappear on their own. Generally, you are not in a hurry to do surgery, and you can often peel off your lower eyelids. Sometimes they can put adhesive tape on the lower eyelid (but rarely used, adhesive tape can cause children's delicate skin allergies, rashes or erosion). In addition, it should also be used with anti-inflammatory eye drops and eye drops to promote corneal epithelial repair.

If the eyelashes severely irritate the cornea at the age of 5 ~ 6, and there are many tears, you can consider surgery. Younger children can use suture correction, and use the force of suture traction to pull the eyelid margin outward. This method is simple, short and safe, but it is easy to relapse, and some patients relapse after months or years. Partial excision of lower eyelid skin and orbicularis oculi muscle is feasible for older patients with severe entropion. This operation method has high success rate and lasting effect, but it needs to use lower eyelid incision or upper eyelid incision, and the general anesthesia time is slightly longer. Some patients will leave scars on the lower eyelid after operation, and some patients will leave the appearance of double eyelids on the lower eyelid. Most parents of children are afraid of "surgery" and are more likely to accept suture surgery as a "stopgap measure" to slow down trichiasis stimulation.

(2) For a few adults with local trichiasis without entropion, the common treatment methods are as follows:

① Removal method: When the number of trichiasis is small, it can be removed directly with eyelash tweezers, which is simple and effective, but it is easy to recur within a few weeks because the eyelash hair follicle is not destroyed. The regrown eyelashes will be thicker and harder, which will irritate the cornea. Therefore, it is the last resort when there is no other way under bad conditions, or when all other methods fail.

(2) Electrolysis: Sometimes it is necessary to destroy the hair follicle for many times, and the success rate is about 10 ~ 20%.

③ Cryotherapy: Many trichiasis can be relieved, and the potential complications include depigmentation of skin, incision of eyelid margin after operation, injury of meibomian gland, and influence on the stability of tear film.

④ Laser treatment: Laser separation is effective for a few scattered trichiasis.

⑤ Surgical removal of hair follicles under microscope: Hair follicles can be removed under microscope; If the number of trichiasis is large, wedge resection or anterior laminectomy can be used, which is effective for local tufted trichiasis that cannot be treated by other methods.

(3) For a large number of patients with trichiasis and entropion, the commonly used surgical methods are as follows:

① Correction of ciliary entropion by embedding thread on the upper eyelid: This method is suitable for young patients with mild ciliary entropion, thin upper eyelid skin, no slack, less subcutaneous fat and inconspicuous epicanthus.

② Treatment of ciliary entropion with lower eyelid suture by pressing tube: also known as lower fornix skin suture, it is suitable for partial congenital entropion, spastic entropion and degenerative entropion.

③ Cutaneous orbicularis oculi muscle resection: it is suitable for teenagers with lower eyelid vegetation and some elderly people with degenerative lower eyelid entropion cilia through the eyelid margin.

Excision of nearby skin and hypertrophic orbicularis oculi muscle can increase skin tension, strengthen tension, prevent orbicularis oculi muscle from exceeding eyelid edge, suture incision and fix depth.

④ shortening of orbicularis oculi muscle: it is suitable for degenerative varus.

⑤ Wedge resection of tarsal plate (Hotz operation): trichiasis caused by cicatricial entropion, partial thick tarsal plate was surgically removed to restore the position of tarsal margin, relieve the inward traction of eyelid conjunctiva and tarsal plate, and correct the abnormal state of tarsal plate.

⑥ tarsotomy: It is suitable for cases with inconspicuous eyelid deformation and hypertrophy. Its principle is to cut off the tarsal bone from the inferior tarsal sulcus, relieve the traction of scar, and restore the tarsal bone edge to its normal position through suture and ligation.

⑦ Incision of gray line of eyelid margin: it is suitable for patients with inconsistent degree of entropion or patients with partial trichiasis that cannot be completely corrected by other surgical methods.