Final answer:
With a Maddox rod over the right eye, the left eye sees the dot. The Maddox rod test is used to detect alignment issues in the eyes such as strabismus by changing the perception of a light source in the covered eye.
Step-by-step explanation:
When the Maddox rod is placed over the patient's right eye, the left eye sees the dot in a Maddox rod test. The purpose of this test is to evaluate how the eyes work together, specifically to look for any deviations in alignment, such as strabismus. The Maddox rod causes the eye it is in front of to see a line of light instead of the actual point source. Meanwhile, the uncovered eye sees the light as a dot. Consequently, if there is any misalignment of the eyes, the patient will either see the dot and the line offset or at different heights.