Certified Ophthalmic Technician Practice Test 2025 – Complete Exam Prep

Perimetry is the correct choice for assessing peripheral vision because it specifically measures the entire scope of vision, including the peripheral (or side) vision. This test identifies any vision loss in specific areas of the visual field, which is crucial for diagnosing various eye conditions such as glaucoma, retinal detachment, and neurological disorders that can affect visual fields.

Color vision testing evaluates a person's ability to perceive colors, focusing primarily on color discrimination rather than the broader visual field. Visual acuity tests are designed to measure the sharpness or clarity of central vision, which does not assess peripheral vision. Refraction is a procedure used to determine the correct prescription for glasses or contact lenses, focusing on central vision rather than the peripheral visual field. Each of these tests serves a distinct purpose in ophthalmology, but perimetry is uniquely suited for evaluating the extent and sensitivity of peripheral vision.