Risk Factors and Common Organisms in Bacterial Keratitis in a Tertiary Center in Iran.

Cohort studyJournal of ophthalmic & vision research· 2026

Risk Factors and Common Organisms in Bacterial Keratitis in a Tertiary Center in Iran.

Yasaman Hadi, Saba Gholamalizadeh, Leila Ghiasian … Marjan Mazouchi

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CorneaCohort studyDiagnosisQ2IF 1.4

Eye trauma was the most common risk factor for bacterial corneal ulcers.

Risk Factors and Common Organisms in Bacterial Keratitis in a Tertiary Center in Iran.

Yasaman Hadi … Marjan Mazouchi

Journal of ophthalmic & vision research · 2026 · Q2 in Ophthalmology

Purpose

This study aimed to document the spectrum of isolated microorganisms and investigate the risk factors associated with infectious keratitis over a 12-year period at a tertiary referral center.

Methods

A retrospective analysis was conducted on the medical records of 867 patients diagnosed with infectious keratitis between 2009 and 2021.

n = 867 patients

Results

21.9%

eye injuries were the top trigger behind these corneal infections

n = 867 patients

More results

The main causative microorganism for corneal ulcers was found to be Pseudomonas aeruginosa .

Staphylococcus aureus was the primary microorganism isolated in patients below 50 years old, whereas P. aeruginosa was more commonly identified in patients aged 50 and above.

More results

Additionally, other surgical procedures were undertaken in 44.6% of the cases, with tectonic graft and corneal patch graft emerging as the most frequent surgical interventions.

“

Conclusion

This study underscores the importance of trauma as the leading predisposing factor and P. aeruginosa as the predominant microorganism isolated in cases of adult microbial corneal ulcers in Iran.

Risk Factors and Common Organisms in Bacterial Keratitis in a Tertiary Center in Iran.

Risk Factors and Common Organisms in Bacterial Keratitis in a Tertiary Center in Iran.

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