scotomata


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Related to scotomata: scintillating scotoma

sco·to·ma·ta

(skō-tō'mă-tă),
Plural of scotoma.

scotoma

(sko-to'ma) plural.scotomata [Gr. skotoma, to darken]
An island-like blind spot in the visual field.

absolute scotoma

An area in the visual field in which there is absolute blindness.

annular scotoma

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

arcuate 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.

central scotoma

An area of depressed vision involving the point of fixation, seen in lesions of the macula.

centrocecal scotoma

A defect in vision that is oval-shaped and includes the fixation point and the blind spot of the eye.

color scotoma

Color blindness in a limited portion of the visual field.

eclipse scotoma

An area of blindness in the visual field caused by looking directly at a solar eclipse.

flittering scotoma

Scintillating scotoma.

negative scotoma

A scotoma not perceptible by the patient.

peripheral scotoma

A defect in vision removed from the point of fixation of the vision.

physiological scotoma

A blind spot caused by an absence of rods and cones where the optic nerve enters the retina.

positive scotoma

An area in the visual field that is perceived by the patient as a dark spot.

relative scotoma

A scotoma that causes the perception of an object to be impaired but not completely lost.

ring scotoma

Annular scotoma.

scintillating scotoma

An irregular outline around a luminous patch in the visual field that occurs following mental or physical labor, eyestrain, or during a migraine.
References in periodicals archive ?
Symptoms of uveitis affecting the posterior segment of the eye may include photopsia (perceived flashes of light), floaters (appearing as spots or threads), scotomata (area of diminished vision), and metamorphopsia (vision distortion),4 which lead to vitreous haze and loss of BCVA.
Furthermore, pupillary constriction will enhance the influence of scotomata and opacities.
Key: SLE = Systemic lupus erythematosus Generic Name Trade Name Indication Toxic retinopathy Plaquenil Hydroxychloroquine Rheumatoid arthritis, SLE Tamoxyfen Nolvadex Breast cancer Vigabatrin Sabril Epilepsy anti-convulsant Chlorpromazine Largactil Anti-psychotic Desferrioxamine Desferal Anaemia Toxic optic neuropathy Ethambutol Isoniazid Rifina- Tuberculosis treatment Generic Name Visual side effect Toxic retinopathy Plaquenil Bull's eye maculopathy - blurred vision, altered colour Tamoxyfen Crystalline maculopathy - vision impaired if severe Vigabatrin Field restriction Chlorpromazine Blurred vision, abnormal colour (brownish tinge) Desferrioxamine Acuity reduction, scotomata, photopsia, metamorphopsia Toxic optic neuropathy Ethambutol Isoniazid Acuity and field loss, colourdefect-