Anatomy
optic disk Audio
op·tic disk
Subclass of:
Optic Nerve; Retina
Definitions related to optic disk:
  • (optic disc) The portion of the retina at which the axons of the ganglion cells exit the eyeball to form the optic nerve.
    CDISC Terminology
    Clinical Data Interchange Standards Consortium (CDISC), 2021
  • (optic disc) A portion of the retina at which the axons of the ganglion cells exit the eyeball to form the optic nerve. No light-sensitive photoreceptors are contained within this portion of the retina.
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
  • Intraocular portion of the optic nerve formed by fibers converging from retina and appearing as a pink to white disk.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • The front surface of the optic nerve, where all the retinal nerve fibers come together to carry an image to the brain.
    Harvard Dictionary of Health Terms
    Harvard Medical Publishing, 2011
  • The portion of the optic nerve seen in the fundus with the ophthalmoscope. It is formed by the meeting of all the retinal ganglion cell axons as they enter the optic nerve.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.