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An afferent pupillary defect is an eye condition where one eye is less sensitive to light, and will not contract as sharply in response to light as the unaffected eye.This can be a sign of optic nerve damage, tumor, glaucoma, and a number of other eye issues.n afferent pupillary defect may be a sign of damage to the optic nerve. An afferent pupillary defect may be a sign of glaucoma or other eye conditions.
What is the function of afferent nerves? They carry nerve impulses from your sensory organs, like your eyes, to your brain, or your central nervous system (CNS). When your eyes see something shiny on the ground, your â¦ afferent nerves tell your brain what your eyes see.In contrast, efferent nerves carry nerve impulses from your brain to parts of your body.So, when you see something shiny on the ground, your brain tells you to pick it up and look at it.fferent nerves are the one that carry the information from periphery to central nervous system for further processinng. While efferent nerves carry the processed information from central nervous system towards the periphery for action.