Which of the following diagnostic procedures is used to identify corneal abrasions or ulcers?

Question

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Fluorescein staining is a diagnostic procedure used to identify corneal abrasions or ulcers. This involves placing a dye (fluorescein) on the surface of the eye, which highlights any defects or irregularities on the cornea when viewed under a blue light. Tonometry measures intraocular pressure, ophthalmoscopy examines the back of the eye, and keratometry measures corneal curvature. None of these tests are specifically used to identify corneal abrasions or ulcers.

Which of the Following Diagnostic Procedures Is Used to Identify