conjunctival hyperemia
Introduction
Introduction to conjunctival hyperemia Conjunctival hyperemia is a primary or secondary disease of the conjunctiva or surrounding appendages, limited to conjunctival disease or related superficial irritation. Conjunctival hyperemia generally does not cause serious eye diseases, it is easier to cure, but patients with eye diseases such as glaucoma and scleritis should pay more attention. Clinically, most patients with eye diseases have no symptoms of congestion, but they may cause blindness. basic knowledge Probability ratio: Susceptible people: no special people Mode of infection: contact infection Complications: conjunctivitis allergic conjunctivitis
Cause
Conjunctival hyperemia
Iris (30%):
The pathogenesis of the iris ciliary body is very complicated, and most of the causes are unknown, which may be related to autoimmune diseases such as rheumatism and tuberculosis, syphilis, and viral infection.
Acute conjunctivitis (25%):
It is a common epidemic eye disease caused by bacterial and viral infections and is highly contagious. Symptoms: The onset is urgent, both eyes have a simultaneous or sequential onset, and the affected eyes have tingling, itching, and foreign body sensation. In severe cases, there is photophobia and burning sensation, and vision is generally unaffected.
Keratitis (25%):
Most keratitis is caused by an external infection. Mild corneal trauma is often the cause of infection. Common pathogens are bacteria, fungi, viruses, and the like. In addition, corneal immune dysfunction or malnutrition can cause keratitis.
Signs: eye pain, foreign body sensation, eyelids, fear of light, tearing, sudden drop in vision.
Prevention
Conjunctival hyperemia prevention
1. Maintain good personal hygiene. Wash hands thoroughly before and after touching the eyes. It is best not to touch your eyes with your hands.
2. Do not share towels or personal hygiene products with others, wash your face and hands with running water. Do not touch the face wash, handkerchief used by the patient and treat used medical equipment.
3. Do not share eye medicines, eye cosmetics and other medicines or supplies that may come into contact with others; do not use collective eye drops to prevent eye diseases.
4. In daily life, there are few public places such as swimming pools, especially those with low immunity, so as to avoid infection.
Complication
Conjunctival hyperemia complications Complications conjunctivitis allergic conjunctivitis
Conjunctivitis, dry eye, allergic conjunctivitis.
Symptom
Symptoms of Conjunctival Congestion Common Symptoms Conjunctival Congestion and Fever with Eye Congestion Eyes Red Eye Conjunctiva
The most striking symptom of inflamed eyes is redness. If you have acute or chronic conjunctivitis, various keratitis, iridocyclitis, scleritis, glaucoma, chemical burns on the eyes, etc., you may have different degrees of eye congestion. Eyeball congestion is divided into two types: shallow and deep. The former is bright red, called "conjunctival hyperemia"; the latter is dark red, called "ciliary congestion". Both have a "mixed congestion".
Examine
Conjunctival hyperemia check
Excitation test
A provocation test is a test that simulates a natural morbid condition, causes a mild allergic episode with a small amount of allergen, and is used to determine the allergen. It is mainly used for type I allergic reactions and sometimes for the examination of type IV allergic reactions. This method can exclude false positive reactions and false negative reactions in skin tests, especially when skin tests or other tests fail to obtain positive results.
The challenge test is divided into a specific challenge test and a non-specific challenge test. Non-specific challenge is to use heptamine or methylcholine as a mist inhalation to observe the patient's sensitivity to type I allergic reaction, so as to conduct etiological analysis or efficacy determination; specific challenge is to use antigen to test, clear allergen Have a certain value. Depending on the location of the patient, different organ stimulation tests can be performed, often with bronchial provocation test (BPT), nasal mucosal challenge test, and conjunctival challenge test.
Corneal phototherapy
Corneal phototherapy is one of the methods for the treatment of exposed keratitis. Exposure keratitis is common in various lesions of cleft palate, causing corneal exposure and blink dyskinesia. The tears cannot properly wet the cornea. Corneal epithelial damage occurs.
Diagnosis
Conjunctival hyperemia diagnosis
Congestion and redness of the eye is one of the common signs in ophthalmology patients. It is often said that red eye is a general concept, which refers to conjunctival hyperemia and ciliary congestion. Conjunctival hyperemia is limited to conjunctival disease or related superficial stimulation, while ciliary congestion includes diseases of the cornea, sclera, and anterior pigmentation, often with certain severity. In some cases, both types of hyperemia can exist at the same time. This condition is called mixed hyperemia.
Acute iridocyclitis distinction:
Vision loss is accompanied by significant photophobia, tearing, and pain, which can be radiated to the eyebrows, ankles, and forehead. Vision loss is accompanied by significant photophobia, tearing, and pain, which can be radiated to the eyebrows, ankles, and forehead.
Distinguish from acute conjunctivitis:
The eyelids are red and swollen, the conjunctiva is congested, and the secretions are mostly bacterial, mucous or purulent. In the morning, the eyes are closed by secretions. The secretion of viral infection is mostly watery, and may be accompanied by corneal lesions, swelling of the ear and submandibular lymph nodes and tenderness.
Distinguish from keratitis:
Keratitis caused by different causes has its own characteristics, but the basic signs are orbital edema, conjunctival hyperemia, bulbar conjunctiva mixed with congestion and edema, opacity or ulceration of the cornea, sediment after the cornea, empyema in the anterior chamber, etc. .
