What causes creeping corneal ulcers?

Creeping corneal ulcers are mostly corneal ulcers caused by Streptococcus pneumoniae, Klebsiella pneumoniae, Proteus, etc., on the basis of corneal epithelial cell damage.

The disease is caused by virulent bacteria, such as pneumococcus, Staphylococcus aureus, hemolytic streptococcus, gonorrhoeae, and Bacillus subtilis. Before the onset of the disease, there is a history of corneal surface trauma, such as touches such as tree branches, cotton stalks, firewood and grass, abrasions on nails and eyelashes, or foreign objects such as dust and dirt into the eyes. Chronic dacryocystitis is also a potential cause of infection, and after corneal trauma, bacteria in the conjunctival sac can become weak, infecting the damaged area and causing corneal ulcers.

Creeping corneal ulcer is a relatively common acute purulent corneal ulcer in ophthalmology, usually accompanied by pyometra, and the clinical manifestations are obvious foreign body sensation, stinging sensation, and even burning sensation in the eye, accompanied by obvious vision loss, usually caused by purulent bacterial infection. Once the diagnosis is confirmed, anti-infective symptomatic ** and topical sensitive antibiotic eye drops, such as levofloxacin hydrochloride eye drops, tobramycin eye drops, and other frequent eye spots, need to be given. If symptoms are severe or accompanied by systemic reactions, such as stomach chills and fever, systemic antibiotics may also be considered.

In addition, routine use of mydriatic drugs is required for prophylaxis and **uveitis.

Corneal ulcers present with eye redness, mild to severe eye pain, photophobia, vision loss, and discharge. Physical examination reveals localized white opacity infiltrates of the corneal stroma, superficial epithelial defects, and mechanistic defects, resulting in corneal ulceration and fluorescein staining. Secondly, there are conjunctival injection, corneal thinning, stromal edema and inflammatory reaction around the infiltrating foci, anterior chamber inflammatory reaction, and upper eyelid edema.

Common corneal ulcers include: bacterial, fungal and amoebic simple virus infections. Bacteria are the most common infection**.

In general, corneal infection is first considered to be bacterial, and it is only considered to be non-bacterial infection after laboratory evidence of other factors or ** experimental failure. Possible causes of aseptic corneal ulcers are ocular xerotic syndrome, rheumatoid arthritis or other connective tissue diseases, vernal conjunctivitis, trophic keratopathy, vitamin A deficiency, etc. Negative microbial cultures, minimal or no anterior chamber inflammation.

Both infectious keratitis and noninfectious keratitis can cause corneal ulcers, which can occur when keratopathy affects the stroma. Corneal ulcers are caused by many causes, such as trauma, viral, bacterial, fungal and immune diseases. When a patient has a corneal ulcer, it indicates that the patient's condition is serious, and most of the symptoms are decreased vision, red and swollen eyes, and eye pain.

How's it going? Take it as early as possible.

The early stages of ulceration should be distinguished from uncomplicated or pseudomonas aeruginosa keratitis. Ulcers that progress to a severe stage can be easily confused with Pseudomonas aeruginosa or fungal corneal ulcers.