What Is Meibomianitis?

One of the components of the eyelid. The meibomian is formed by dense connective tissue, which is like cartilage and supports the eyelid. The upper tarsal plate is wider than the lower tarsal plate, both of which are half-moon shaped, located between the orbicularis oris and conjunctiva. For eyelid inversion and eyelash surgery, it is often necessary to remove part of the eyelid. There are also congenital meibomian hypoplasia.

One of the components of the eyelid. The meibomian is formed by dense connective tissue, which is like cartilage and supports the eyelid. The upper tarsal plate is wider than the lower tarsal plate, both of which are half-moon shaped, located between the orbicularis oris and conjunctiva. For eyelid inversion and eyelash surgery, it is often necessary to remove part of the eyelid. There are also congenital meibomian hypoplasia.

Chinese name

tarsus

Foreign name

arsus

Pinyin

jinbn

Explanation

Tough and dense fiber connective tissue plate

1 Anatomy of tarsal plate 1, tarsal plate:

It was a semilunar shape with a forward protrusion and a concave depression. It is composed of dense connective tissue and rich elastic fiber tissue. It contains many meibomian glands, which secrete sebaceous glands to lubricate the eyelid margin and prevent tissue fluid from soaking the eyelid skin. The upper eyelid is large and thick, and the lower eyelid is thin and narrow. The shallow side of the eyelid is loosely connected to the orbicularis oris muscle, and the deep side is closely attached to the eyelid conjunctiva. The zygomatic ligament is connected to the orbital margin at the level of the inner and outer condyles. Located on the inner surface of the eyelid, it is composed of dense fibrous tissue, hard like cartilage, and shaped like a meniscus, so it is also called a meniscus. It is a bracket for the eyelids, covering the front of the eye sockets and making the eyelids into a certain shape. The upper eyelid is larger than the lower eyelid and contains more meibomian glands. Each side contains 30 to 40 meibomian glands. The meibomian is about 10 mm wide, about 29 mm long and about 1 mm thick. Small, with 20 to 30 meibomian glands. The meibomian glands are arranged vertically at the back of the eyelid, moisturizing the upper and lower eyelids, preventing tears from flowing through the eyelids and soaking the eyelid skin.

2- Meibomian 2, meibomian common diseases-meibomian adenitis:

Chronoma is a chronic inflammatory granulomatous meibomian gland formed on the basis of obstruction of the meibomian gland drainage duct and retention of secretions. Also known as meibomian gland cyst. It is a common disease that can be affected by children and adults. The disease progresses slowly and can recur. Hard lumps can be touched on the eyelids, but there is no pain, and the surface skin is raised. When the disease occurs in the elderly and has a tendency to recur, it needs to be distinguished from meibomian adenocarcinoma.

Clinical manifestations:

1. The course of disease is slow, there is usually no obvious symptoms, no pain in the eyes, and sometimes there is only a heavy feeling. It can cause temporary astigmatism due to mass compression, or foreign body sensation caused by mass compression.

2. One to several round lumps of various sizes can be touched under the skin of the eyelids, ranging from rice grains, mung beans to soybeans, cherries, smooth surface, not sticking to the skin, clear edges, and no tenderness.

3. Turn the eyelid over the mass on the conjunctival surface, and you can see the purple-red or gray-red localized bulge. If secondary infections can develop into a stye.

4. Small lumps can be completely absorbed by themselves, or they can pierce the conjunctival surface and discharge gel-like contents to form mushroom-like granulation. This granulation tissue can also pass through the drainage duct of the meibomian gland to form a nipple on the surface of the eyelid Like proliferation.