What condition describes if the amount of light information transmitted to the brain from one eye differs from that of the other eye?

The condition that describes a difference in the amount of light information transmitted to the brain from one eye compared to the other is known as an Afferent Pupillary Defect (APD). This condition typically occurs when there is some form of damage or dysfunction in the sensory pathway of one eye.

In the case of an APD, when light is shone into the affected eye, the response of the pupil is less constricted than that of the unaffected eye. This phenomenon is a result of how the pupillary light reflex works: the brain receives less sensory input from the affected eye, leading to an asymmetric pupillary reaction when light is directed into both eyes at the same time. This differential response highlights the dysfunction in the afferent pathway—that is, the system responsible for transmitting visual information from the retina to the brain.

The other options—Adie’s Pupil, Papilledema, and Pupillary Reflex—do not specifically describe the situation of differing light transmission to the brain from each eye. Adie’s Pupil pertains to a condition affecting the autonomic nervous system leading to a dilated pupil and poor reaction to light, Papilledema refers to swelling of the optic disk due to increased intracranial pressure, and Pup