Family Nurse Practitioner Exam

What is the best procedure for evaluating a corneal abrasion?

1. Tonometry

2. Fluorescein stain

3. Visual field test

4. Funduscopy

The correct answer is: Fluorescein stain

The best procedure for evaluating a corneal abrasion is the use of fluorescein stain. This method involves applying a fluorescent dye to the surface of the eye, which binds to any damaged areas of the corneal epithelium. When illuminated with a blue light, the areas of abrasion will appear bright green, allowing for clear visualization of the extent and location of the injury. Fluorescein staining is a quick and effective diagnostic tool for healthcare providers, particularly in emergency and primary care settings, as it can immediately highlight corneal injuries and guide appropriate management. This procedure is commonly used in clinical practice to assess corneal abrasions, providing critical information about the integrity of the cornea. In contrast, tonometry is primarily used to measure intraocular pressure and is not relevant in evaluating corneal abrasions directly. Visual field tests assess peripheral vision and do not provide information about corneal surface damage. Funduscopy allows for the examination of the interior of the eye, particularly the retina, but is not useful for assessing superficial ocular surface issues like corneal abrasions.