Mindblown: a blog about philosophy.
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Scotopsin
The protein portion of the rods of the retina of the eye. It combines with 1 1-ci.s-retinal to form rhodopsin.
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Scotometry
The locating and measurement of scotomata.
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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.
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Relative scotoma
A scotoma that causes the perception of an object to be impaired but not completely lost.
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Positive scotoma
An area in the visual field that is perceived by the patient as a dark spot.
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Physiological scotoma
A blind spot caused by an absence of rods and cones where the optic nerve enters the retina.
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Peripheral scotoma
A defect in vision removed from the point of fixation of the vision.
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Negative scotoma
A scotoma not perceptible by the patient.
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Eclipse scotoma
An area of blindness in the visual field caused by looking directly at a solar eclipse.
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Color scotoma
Color blindness in a limited portion of the visual field.
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