creeping corneal ulcer
Introduction
Introduction to claudication corneal ulcer Claudication corneal ulcer is a common acute suppurative corneal ulcer, named after the lesion is centrally expanded. There is often empyema in the anterior chamber, also known as anterior chamber pyogenic corneal ulcer. Clinical manifestations may have a foreign body sensation, a tingling sensation or a burning sensation. The conjunctiva is mixed with hyperemia and is accompanied by edema in severe cases. The disease is caused by bacteria with strong virulence. Pneumococcal, Staphylococcus aureus, hemolytic or green streptococci, Neisseria gonorrhoeae, Bacillus subtilis can cause disease. The disease is characterized by acute onset, obvious eye irritation, grayish yellow or yellowish white infiltration or ulceration of the cornea, iritis reaction in the early anterior chamber, development in a severe stage, manifested as yellowish white suppurative ulcer It often spreads to one side, and every time there is empyema in the anterior chamber, the base of the ulcer may have abscess formation. basic knowledge Sickness ratio: 0.1% Susceptible people: more common in the elderly. Mode of infection: non-infectious Complications: suppurative endophthalmitis iritis
Cause
Causes of claudication corneal ulcer
Bacterial infection (40%):
Claudication keratitis is a common acute suppurative corneal ulcer. The anterior chamber often has empyema, also known as anterior chamber pyogenic corneal ulcer. Mainly caused by bacteria with strong virulence, pneumococci, Staphylococcus aureus, hemolytic or green streptococci, Neisseria gonorrhoeae, Bacillus subtilis can cause disease.
Trauma factors (25%):
Onset of the disease often has a history of corneal surface trauma, such as branches, cotton poles, firewood and other touches, nails, eyelashes and other abrasions. Chronic dacryocystitis is also a cause of infection, bacteria can be brought in by the injury, or the conjunctival sac in the eye already exists.
Other factors (25%):
Or foreign matter such as dust and dirt. The incidence is more in summer and autumn, more rural patients than cities, more common in the elderly, infants or children are rare, and in recent years occasionally wearing contact lenses.
Prevention
Claudication corneal ulcer prevention
Usually pay attention to protect the eyes, prevent damage and bacterial infections, once the injury, emergency treatment, do not delay, strictly follow the doctor's advice, until cured.
Complication
Complications of claudication corneal ulcer Complications purulent endophthalmitis iritis
The grayish yellow round ulcer in the center of the cornea shows fouling. When the inflammation is heavy, it gradually invades all the deep corneas, and causes post-corneal abscess. The abscess ulceration forms corneal ulcer, which can promote corneal perforation, endophthalmitis, eyeball atrophy, fungal keratitis. The onset is slow, the pain is heavier, the middle of the ulcer is mostly gray-white bulge, the edge has a shallow groove, the anterior chamber also has a sputum membrane, and iritis.
Symptom
Cockroach corneal ulcer symptoms Common symptoms Corneal ulcer Eye pain Conjunctival edema and corneal ulcer The cornea has a lawn or ulcerated eye itchy conjunctival congestion...
The disease is characterized by acute onset, obvious eye irritation, grayish yellow or yellowish white infiltration or ulceration of the cornea, iritis reaction in the early anterior chamber, development in a severe stage, manifested as yellowish white suppurative ulcer It often expands to one side, and there is accumulation in the anterior chamber. The base of the ulcer may have abscess formation. The main symptoms may have foreign body sensation, tingling or burning sensation, mixed conjunctival congestion, and edema in severe cases. Ulcers first appear in the damaged cornea after trauma, initially grayish white or yellow-white dense infiltration point, about rice or mung bean size, surrounded by gray-colored edema area, is an early phenomenon.
Examine
Examination of claudication corneal ulcer
Check the corneal damage, or the center of the cornea, there is gray or yellow infiltration, the ulcer is progressive, often in the crescent-shaped infiltration on one side of the edge, to the surrounding and deep development, while the opposite side is relatively clean, its shape Like a snake, but also visible anterior chamber empyema.
Diagnosis
Diagnosis and diagnosis of claudication corneal ulcer
The early stage of the disease ulcer should be distinguished from simple or Pseudomonas aeruginosa keratitis. The ulcer develops to a severe stage and is often confused with Pseudomonas aeruginosa or fungal corneal ulcer.
