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Definition of Optic disk
1. Noun. The point where the optic nerve enters the retina; not sensitive to light.
Definition of Optic disk
1. Noun. (alternative spelling of optic disc) ¹
¹ Source: wiktionary.com
Medical Definition of Optic disk
1. 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. Because the retina at the optic disk has no photoreceptors there is a corresponding blind spot in the visual field. (12 Dec 1998)
Lexicographical Neighbors of Optic Disk
Literary usage of Optic disk
Below you will find example usage of this term as found in modern and/or classical literature:
1. The American Journal of the Medical Sciences by Southern Society for Clinical Investigation (U.S.) (1901)
"First symptom, sensory aphasia ; local symptoms, sensory aphasia ; general
symptoms, headache and mental confusion ; optic disk negative ; operation, ..."
2. Bulletin of the Museum of Comparative Zoology by Museum of Comparative Zoology, John E. Cadle, Harvard University (1891)
"37) the optic disk, so called, is oval in outline rather than disk-shaped ...
A section passing through an optic disk in a plane perpendicular to the ..."
3. A Treatise on the Diseases of the Eye by John Soelberg Wells (1883)
"At the commencement of the glaucomatous excavation, the cupping may be partial,
being confined to one portion of the optic disk ; but it will already show ..."
4. Transactions of the American Ophthalmological Society Annual Meeting by American Ophthalmological Society (1876)
"INTRAOCULAR CIRCULATION: RHYTHMICAL CHANGES IN THE VENOUS PULSE OF THE optic disk.
By DR. OF WADSWORTH and DR. JJ PUTNAM, of Boston. ..."
5. A Manual for the Practice of Surgery by Thomas Bryant (1881)
"Inflammation of the optic disk (optic neuritis, neuro-retinitis) occurs as the
... Ischaemia of the disk (choked disk) Choking of the optic disk is met with ..."
6. A Manual of the Diagnosis and Treatment of the Diseases of the Eye by Edward Jackson (1907)
"At death the blood-column is seen to become finely granular before its movement
ceases. CHANGES IN THE optic disk. Redness.—Most of the eyes examined ..."
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