Final answer:
The Maddox rod is used to test for ocular deviations, while the red lens testing assesses ocular dominance. Both tests provide valuable information about the eyes and visual system.
Step-by-step explanation:
The Maddox rod is a device used in ophthalmology to test for ocular deviations. It consists of a cylindrical rod with alternating light and dark bands. When a person with normal vision looks at a light source through the rod, the light appears as a solid line. However, if there is an ocular deviation present, the light will appear as two separate lines. This test helps diagnose conditions like strabismus (crossed eyes) or phorias (latent misalignment of the eyes).
The red lens testing is a method used to assess ocular dominance. It involves looking through a red filter at an object at a distance, with both eyes open. If the object appears in front of the red filter, the dominant eye is the one being used. If the object appears behind the red filter, the non-dominant eye is being used. This test can help in various situations, such as determining which eye to focus on in shooting sports or understanding the visual system's functioning.