Which of the following measures is part of assessing visual function in a vision rehabilitation exam?

• A. Blood pressure measurement
• B. Hearing acuity
• C. Visual acuity, contrast sensitivity, color vision, binocularity
• D. Ocular motility testing

Answer: (C)

The main idea is that a vision rehabilitation exam focuses on how well a person actually sees and uses vision in everyday tasks. The most relevant measures are those that quantify different aspects of functional vision: how sharp details are recognized (visual acuity), how well faint or subtle contrasts are detected (contrast sensitivity), how accurately colors are distinguished (color vision), and how well both eyes work together to provide a single, coordinated image (binocularity).

Visual acuity tells you the smallest details a person can resolve at a given distance, which relates directly to reading signs, recognizing faces, and other daily tasks. Contrast sensitivity matters in real-world settings where lighting isn’t perfect or objects don’t stand out clearly, such as driving in fog or navigating stairs. Color vision is important for identifying colored cues, labels, or hazards. Binocularity assesses alignment and teamwork between the eyes, which influences depth perception and comfortable, single binocular vision.

Blood pressure measurement and hearing acuity assess non-visual health or sensory function and aren’t measures of visual performance. Ocular motility testing evaluates eye movements and alignment, which is important, but the option that lists the four functional-vision measures gives the most direct picture of how vision operates in everyday activities.