In HSV keratitis testing, which test assesses corneal sensitivity?

In HSV keratitis testing, which test assesses corneal sensitivity?

• A. NaFl
• B. Rose Bengal
• C. Corneal sensitivity testing
• D. Kidney function tests (BUN & Creatinine)

Answer: (C)

Measuring corneal sensation directly assesses how well the cornea can sense touch, which is often reduced in HSV keratitis due to viral involvement of the corneal nerves. Corneal sensitivity testing uses a calibrated device (esthesiometer) to determine the sensation threshold, providing a direct evaluation of sensory function and helping detect neurotrophic changes. In contrast, fluorescein staining reveals epithelial defects, Rose Bengal highlights devitalized cells on the surface, and kidney function tests have no relevance to the ocular surface.

Measuring corneal sensation directly assesses how well the cornea can sense touch, which is often reduced in HSV keratitis due to viral involvement of the corneal nerves. Corneal sensitivity testing uses a calibrated device (esthesiometer) to determine the sensation threshold, providing a direct evaluation of sensory function and helping detect neurotrophic changes. In contrast, fluorescein staining reveals epithelial defects, Rose Bengal highlights devitalized cells on the surface, and kidney function tests have no relevance to the ocular surface.