Which statement accurately reflects the bacterial keratitis testing protocol?

Which statement accurately reflects the bacterial keratitis testing protocol?

• A. NaFl, A-seg photography, and culture are used (cultured if lesion >2 mm or unresponsive to tx)
• B. Only NaFl is used
• C. Only A-seg photography is used
• D. Cultures are never used

Answer: (A)

When assessing bacterial keratitis, the testing approach combines three components: staining to reveal the epithelial defect, imaging to document the lesion, and culture to identify the organism when needed. Fluorescein staining highlights the ulcer, showing size and severity and guiding initial measurement and monitoring. Anterior segment photography provides an objective record of the lesion at baseline and over time, which helps track progression or healing. Cultures are obtained from corneal scrapings to identify the causative organism and tailor antibiotics, but they’re especially important when the ulcer is larger than about 2 mm or when there’s poor or no response to initial treatment. This combination ensures you confirm the defect, have a precise record, and know the exact pathogen to direct therapy. The other options are incomplete because focusing only on fluorescein fails to document progression or guide microbiology; focusing only on photography misses the diagnostic confirmation of the epithelial defect; and stating that cultures are never used ignores the role of culture in guiding treatment for larger or nonresponding ulcers.

When assessing bacterial keratitis, the testing approach combines three components: staining to reveal the epithelial defect, imaging to document the lesion, and culture to identify the organism when needed. Fluorescein staining highlights the ulcer, showing size and severity and guiding initial measurement and monitoring. Anterior segment photography provides an objective record of the lesion at baseline and over time, which helps track progression or healing. Cultures are obtained from corneal scrapings to identify the causative organism and tailor antibiotics, but they’re especially important when the ulcer is larger than about 2 mm or when there’s poor or no response to initial treatment. This combination ensures you confirm the defect, have a precise record, and know the exact pathogen to direct therapy.

The other options are incomplete because focusing only on fluorescein fails to document progression or guide microbiology; focusing only on photography misses the diagnostic confirmation of the epithelial defect; and stating that cultures are never used ignores the role of culture in guiding treatment for larger or nonresponding ulcers.