What consensual response normally occurs when shining a light in the right eye?

When shining a light in the right eye, the normal consensual response is for both pupils to constrict. This reaction is part of the pupillary light reflex, where light entering one eye causes a response in both eyes, resulting in constriction to reduce the amount of light entering them. This response helps protect the retina from excessive light and improves vision by enhancing depth of field.

In this scenario, when light is directed at the right eye, the photoreceptors in that eye signal the brain, which then communicates with both pupils through the oculomotor nerve to constrict. The left pupil constricts as a consensual response even though light was only directed at the right eye.

Therefore, the correct answer reflects the proper physiological response of the pupils when light is shined into one eye.