optic disc


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Related to optic disc: optic cup, macula, macula lutea

op·tic disc

[TA]
an oval area of the ocular fundus devoid of light receptors where the axons of the retinal ganglion cell converge to form the optic nerve head;

optic disc

the small blind spot on the surface of the retina, located about 3 mm to the nasal side of the macula. It is the point where the fibers of the retina leave the eye and become part of the optic nerve. It is the only part of the retina that is insensitive to light. At its center the porus opticus marks the point of entrance of the central artery of the retina. Also called
Usage notes: (informal)
blind spot, discus nervi optici.
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Optic disc

op·tic disc

(op'tik disk) [TA]
An oval area of the ocular fundus devoid of light receptors where the axons of the retinal ganglion cells converge to form the optic nerve head.
Synonym(s): discus nervi optici [TA] , blind spot (3) , optic papilla.

optic disc

The small circular area at the back of the eye at which all the nerve fibres from the retina come together to form the optic nerve.
References in periodicals archive ?
On fundus examination, bilateral swollen optic discs with flame-shaped haemorrhages were apparent (Fig.
A full clinical reevaluation was performed in September 2005; abnormal findings were limited to poor visual acuity, pale optic discs, and sluggish pupillary light reaction.
Eye examination revealed the continuation of bilateral abducens paresis and left optic disc edema.
SINGULUS TECHNOLOGIES is a market leader for Optic Disc production lines and is the only manufacturer globally to offer the complete range of products, mastering, molding and replication lines.
Cystoid macular oedema (CMO) occurs in 25% of cases, (11) and other findings may include neovascularisation involving the peripheral retina or optic disc, periphlebitis and optic disc swelling.
It is important to know the appearance of the normal optic disc because then the abnormal glaucomatous disc will be more readily diagnosed.
Ophthalmological examination revealed a diffuse swelling in the left periorbital and temporal region, pain, redness, proptosis and prominent limitation of left eye movements and bilateral optic disc oedema.
Other topics include the semantic annotation of medical protocols, optimal control of patient admissions, the ACGT master ontology on cancer, and automated detection of optic disc location in retinal images.
We'll shine a light into the eye to look at the optic disc, test your central and peripheral vision and check the internal pressure with a machine that blows gentle puffs of air into your eye.
The optometrist can also pick up other MS clues, such as a pale optic disc and loss of field of vision.