Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to scotomata: scintillating scotoma
Plural of scotoma.
Farlex Partner Medical Dictionary © Farlex 2012
scotoma(sko-to'ma) plural.scotomata [Gr. skotoma, to darken]
An island-like blind spot in the visual field.
An area in the visual field in which there is absolute blindness.
A scotomatous zone that encircles the point of fixation like a ring, not always completely closed but leaving the fixation point intact. Synonym: ring scotoma
An arc-shaped scotoma near the blind spot of the eye. It is caused by a nerve bundle defect on the temporal side of the optic disk.
An area of depressed vision involving the point of fixation, seen in lesions of the macula.
A defect in vision that is oval-shaped and includes the fixation point and the blind spot of the eye.
Color blindness in a limited portion of the visual field.
An area of blindness in the visual field caused by looking directly at a solar eclipse.
flittering scotomaScintillating scotoma.
A scotoma not perceptible by the patient.
A defect in vision removed from the point of fixation of the vision.
A blind spot caused by an absence of rods and cones where the optic nerve enters the retina.
An area in the visual field that is perceived by the patient as a dark spot.
A scotoma that causes the perception of an object to be impaired but not completely lost.
ring scotomaAnnular scotoma.
An irregular outline around a luminous patch in the visual field that occurs following mental or physical labor, eyestrain, or during a migraine.
Medical Dictionary, © 2009 Farlex and Partners