Bacillus licheniformis corneal ulcer

Area of Science:

• Ophthalmology
• Microbiology

Background:

• Corneal ulcers are a significant cause of vision loss.
• Bacterial keratitis requires prompt diagnosis and treatment.

Observation:

• A 46-year-old female presented with a corneal ulcer following ocular trauma.
• Microbiological cultures identified Bacillus licheniformis as the causative agent.

Findings:

• The isolated Bacillus licheniformis exhibited resistance to certain antibiotics.
• Successful resolution of the corneal ulcer was achieved using topical, subconjunctival, and intramuscular gentamicin sulfate.

Implications:

• Gentamicin sulfate remains an effective treatment option for Bacillus licheniformis-induced corneal ulcers.
• This case underscores the importance of appropriate antibiotic selection and administration routes in managing complex bacterial keratitis.