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Pronunciation: byer′ūm
Definition: a comet-shaped scotoma, occurring in glaucoma, attached at the temporal end to the blind spot or separated from it by a narrow gap; the defect widens as it extends above and nasally curves around the fixation spot, and then extends downward to end exactly at the nasal horizontal meridian.
Synonym(s): Bjerrum sign, sickle scotoma
Examples: glitazone, GI cocktail, etc.
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