Certified Paraoptometric Practice Test

What is the role of a visual field test?

1. To measure depth perception

2. To assess the full horizontal and vertical range of a patient's vision

3. To determine eye pressure

4. To evaluate color vision

The correct answer is: To assess the full horizontal and vertical range of a patient's vision

The role of a visual field test is to assess the full horizontal and vertical range of a patient's vision. This test maps out the entire area that a person can see while focusing on a central point, which includes areas of peripheral vision. It is particularly important for identifying any loss of vision that may not be readily apparent through other tests. Visual field testing is commonly used in patients with conditions that can affect visual perception, such as glaucoma, retinal diseases, and neurological disorders. By evaluating the complete range of vision, healthcare providers can diagnose issues related to the functioning of the retina, optic nerve, and brain pathways responsible for vision. In contrast, measuring depth perception, determining eye pressure, and evaluating color vision involve different assessments and methodologies and do not encompass the primary purpose of a visual field test.