Conjunctival edema and corneal ulcer
Introduction
Introduction Various pathogenic factors cause the conjunctiva to be in a state of damage, causing lesions, leading to edema called conjunctival edema; if improperly treated, light can cause keratitis, corneal ulcers, etc., and severe cases can cause infection or even blindness. In the early stage of corneal ulcer disease, the eyes have obvious irritation symptoms, fear of light, tearing, eye pain, grayish white spots or flaky infiltration on the cornea; in severe cases, the above symptoms are more obvious, the eyes are not open, the eye pain is unbearable, and vision is diminished. The bulbar conjunctiva is purplish red, and the more severe it is near the cornea, the grayish white necrotic tissue can be seen on the surface of the cornea, forming an ulcer.
Cause
Cause
Causes of conjunctival edema and corneal ulcers:
The cause of conjunctival edema is nothing more than microbial and non-microbial. In terms of microbial properties, bacteria, viruses, parasites, etc. can cause conjunctival inflammation, and the source is very wide, directly from the outside world, but also from itself, and self-infection may be transferred to the conjunctiva through blood or lymph ( Tuberculosis, etc.; or from adjacent tissues, such as the eyeball itself (corneal, sclera), eyelids, nasal and paranasal sinuses, tears, surrounding eyelid skin directly spread. In the case of non-microbial causes, mechanical, physical (thermal, radiological, electrical), chemical, and even systemic allergic conditions and some systemic metabolic disorders (such as rheumatism, gout) can be a causative factor.
The cornea is the transparent film on the front of the eyeball, which is often exposed to the air and has a lot of exposure to germs. Often due to foreign bodies and other trauma, corneal foreign body removal after injury and trachoma and its complications, varus stunned cornea, bacteria, viruses or fungi take the opportunity to cause infection and corneal ulceration. In addition, allergic reactions such as tuberculosis, vitamin A deficiency, facial paralysis and eye scars can cause corneal ulcers.
Examine
an examination
Related inspection
Corneal microscopy, corneal staining, ophthalmoscopy, ultrasound examination of eyeballs and eyelids
Examination and diagnosis of conjunctival edema and corneal ulcer:
If the conjunctival edema is not properly treated, it may cause keratitis, corneal ulcer, etc., and may cause infection or even blindness.
In the early stage of corneal ulcer disease, the eyes have obvious irritation symptoms, fear of light, tearing, eye pain, grayish white spots or flaky infiltration on the cornea; in severe cases, the above symptoms are more obvious, the eyes are not open, the eye pain is unbearable, and vision is diminished. The bulbar conjunctiva is purplish red, and the more severe it is near the cornea, the grayish white necrotic tissue can be seen on the surface of the cornea, forming an ulcer. If the bacteria is highly toxic, combined with chronic dacryocystitis or reduced systemic resistance, the ulcer spreads around or deep, forming anterior chamber empyema, and even causing corneal perforation, which causes serious damage to vision. Pseudomonas aeruginosa corneal ulcer, often caused by perforation of the cornea within 1-2 days, the consequences are very serious. The fungal corneal ulcer, the initial symptoms are mild, the ulcer surface is irregular, grayish white, and the anterior chamber often has empyema.
Diagnosis
Differential diagnosis
Conjunctival edema and corneal ulcers need to be identified with the symptoms:
1. The conjunctiva becomes lighter or paler: the conjunctiva becomes lighter or paler. When the anemia is different, the color of the conjunctiva becomes lighter or paler.
2. There is a defect in the conjunctiva of the eye: the clinical onset of sepsis is acute, and the rash is in various forms such as sputum, urticaria, pustular rash and scarlet fever-like rash, and there is a defect on the conjunctiva.
3. Conjunctival melanosis: kanagener syndrome (kartagener's syndrome) is also known as bronchiectasis-nasal sinusitis-visceral transposition syndrome. Stewart was first reported in 1902. Bronchiectasis - paranasal sinusitis - visceral transposition syndrome can cause conjunctival melanosis.
