optic papilla
noun
: a slight elevation that is nearly coextensive with the optic disc and is produced by the thick bundles of the fibers of the optic nerve in entering the eyeball
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“Optic papilla.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/optic%20papilla. Accessed 30 Oct. 2025.
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