Final answer:
Clinical tests for ARC assess visual direction judgments to evaluate binocular vision, essential for accurately perceiving the position and depth of objects. Such tests do not focus on color perception, saccadic movements, or retinal rivalry, but rather on how the two eyes collaborate to form a unified visual experience.
Step-by-step explanation:
Clinical tests for Anomalous Retinal Correspondence (ARC) must be based on visual direction judgments because they are linked to binocular vision. ARC is a condition where the retinas of the two eyes do not properly align, leading to issues with depth perception and binocular vision. The reason visual direction judgments are essential is that these judgments are how we perceive the position of objects in space, and they rely on the comparison of information represented in the two retinae. Binocular depth cues provide critical data for these judgments because they compare information from both eyes, helping to determine depth and position.
Tests for ARC do not relate to color perception, involve saccadic movements, or reveal the extent of retinal rivalry. Instead, the focus is on how the eyes work together to create a singular and coherent visual field. Tests such as checking for proper alignment and the ability to perceive depth help determine if both eyes are providing consistent visual information to the brain. This is critical for activities that require precise binocular coordination, such as reading and catching a ball.