page_title: Optic cup (anatomical)
hierarchical_section_title: Optic cup (anatomical)
caption_attribution_description: English: The optic disc, optic cup, and macula of a healthy 24 year old female (healthy rim tissue with a deep cup). Image is released to wikimedia commons with patient consent. GIF displays a three dimensional view of the cup via motion parallax. Imaged with a non-mydriatic fundus camera at Pacific University College of Optometry.
context_page_description: The optic cup is the white, cup-like area in the center of the optic disc.
  The ratio of the size of the optic cup to the optic disc is one measure used in the diagnosis of glaucoma. Different C/Ds can be measured horizontally or vertically in the same patient. C/Ds vary widely in healthy individuals. However, larger vertical C/Ds, or C/Ds which are very different between the eyes, may raise suspicion of glaucoma. A C/D which enlarges vertically over months or years suggests glaucoma.
context_section_description: The optic cup is the white, cup-like area in the center of the optic disc.
  The ratio of the size of the optic cup to the optic disc (cup-to-disc ratio, or C/D) is one measure used in the diagnosis of glaucoma. Different C/Ds can be measured horizontally or vertically in the same patient.  C/Ds vary widely in healthy individuals.  However, larger vertical C/Ds, or C/Ds which are very different between the eyes, may raise suspicion of glaucoma.  A C/D which enlarges vertically over months or years suggests glaucoma.
caption: Wiggle stereogram showing the optic cup in a healthy eye