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Stimulus: Near vision or a close object.Receptor: Ciliary muscle and the lens.Afferent Limb: Optic nerve (cranial nerve II).Synapse(s): Optic nerve fibers synapse at the Edinger-Westphal nucleus in the midbrain.Efferent Limb: Preganglionic parasympathetic fibers from the Edinger-Westphal nucleusResponse: Constriction of the pupil (miosis) and adjustment of the lens curvature to focus on the near object.
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