Pathogenesis (development of disease)
Corneal ulcer (corneal ulcer) is often a complication of keratitis (inflammation of the cornea).
Etiology (causes)
Behavioral causes
- Wearing of contact lenses
Disease-related causes
Eyes and eye appendages (H00-H59).
- Keratitis (corneal inflammation), unspecified [bacteria (eg, Staphylococcus aureus, Streptococcus pneumoniae), viruses (herpes simplex), mycoses (especially after antibiotic therapy, or glucocorticoid eye drops), parasites (eg. E.g., amoebae (amoebic keratitis); mostly indirectly via contaminated contact lens cases and care products or subsequently contaminated contact lenses); chemical, physical, mechanical; neurological]
- Decreased/restricted eyelid closure or lack of eyelid closure in facial nerve palsy – leads to drying of the eye.
Endocrine, nutritional and metabolic diseases (E00-E90).
- Vitamin A deficiency
Injuries, poisoning, and other consequences of external causes (S00-T98).
- Minor injuries
- Corneal foreign bodies
- Wearing contact lenses
