What Is the Superior Colliculus?
Potential cystic cavity formed by the palpebral conjunctiva, bulbar conjunctiva, and fornix conjunctiva. The capsular opening is in the blepharoplasty, and the eyelid is closed, that is, the capsular mouth is closed. A layer of mucous covering the upper and lower eyelids and in front of the eyeballs.
- Chinese name
- Conjunctival sac
- Foreign name
- conjunctival sac
- Popular
- The gap between eyelids and eyeballs
- Brief introduction
- Conjunctival sac bacteria cause endophthalmitis
- Potential cystic cavity formed by the palpebral conjunctiva, bulbar conjunctiva, and fornix conjunctiva. The capsular opening is in the blepharoplasty, and the eyelid is closed, that is, the capsular mouth is closed. A layer of mucous covering the upper and lower eyelids and in front of the eyeballs.
Conjunctival sac
- It is a transparent film formed by stratified columnar epithelium and a small amount of connective tissue. The lining of the eyelid is the conjunctiva, and the bulbous conjunctiva is placed in front of the eyeball. The two parts are continuous with each other. When the eyelid is closed, the space surrounded by the conjunctiva is called "conjunctival sac". It has the effect of protecting and facilitating eye movement. The transition between the bulbar and conjunctiva is called the fornix conjunctiva. The conjunctiva is rich in blood vessels and nerve endings, and has a small number of mucous glands, which can secrete mucus and smoothen the eyeballs to reduce friction between the eyelid conjunctiva and the cornea. Chlamydia trachomatis mainly invades the conjunctiva and fornix conjunctiva. Acute bacterial conjunctivitis and viral conjunctivitis are caused by bacteria and viruses that infect the conjunctiva and are both contagious.
Conjunctival sac Second, conjunctivitis
- Conjunctivitis is a common disease, because most people have bacteria in the conjunctival sac and have a suitable temperature and humidity. In addition, most of the conjunctival surface is in direct contact with the outside world, which is easily affected by various external stimuli and microorganisms.
- The causes of conjunctivitis can be divided into three categories: (1) exogenous. Physical factors (such as ultraviolet, infrared, wind, dust, smoke, heat, etc.); chemical factors (such as harmful gases, liquids, dust, acid-base chemical agents, etc.); microbial factors (bacteria, viruses, chlamydia, fungi, etc.); Parasites, etc. (2) Internal causes. Other tissues are caused by inflammatory lesions, allergic diseases, immune diseases, and metabolic diseases. (3) Spread of nearby organizations. Eyelid skin, lacrimal, orbital, sinus and other lesions. In general, bacteria and viruses are more common and important because they are clearly contagious.
- Conjunctivitis is divided into acute, subacute, and chronic, but it is generally conscious of itching, foreign body sensation, burning, and shame. Severe cases may also have pain.
- Conjunctivitis has the following basic lesions: (1) conjunctival congestion, and conjunctival conjunctiva is peripheral congestion. (2) There are mucus, purulent and fibrous secretions in the conjunctival sac. If the patient has poor resistance and strong virulence, a pseudomembrane may appear on the conjunctival surface. (3) Severe subconjunctival hemorrhage of various sizes can be seen in severe conjunctivitis. (4) Nipple formation, which is a proliferative manifestation of chronic inflammation. (5) The appearance of follicles is common in trachoma, follicular conjunctivitis, and conjunctival follicular disease. Severe conjunctivitis can be complicated by keratitis, so it must be treated promptly.
- Treatment principles: (1) Wash conjunctival sac endocrine with normal saline and boric acid water. (2) For local application, bacterial conjunctivitis can be selected with highly targeted and sensitive drugs. Broad-spectrum antibiotics are usually selected. Concomitant application of corticosteroids can reduce the response and shorten the course of treatment. For viral conjunctivitis, eye drops such as 0.1% iodoside and 0.05% cyclocytidine can be spotted. Chronic conjunctivitis can use compound zinc sulfate eye drops. (3) Do not cover the eyes or apply heat. (4) Pay attention to personal hygiene. Isolate utensils, especially towels, washbasins and handkerchiefs. Don't touch and develop the good habit of not rubbing your eyes with your hands, and wash your hands frequently. Children with acute catarrhal conjunctivitis should no longer be sent to a nursery to avoid spread of infection.