资料来源 : pyDict

暗点,盲点

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Scotoma \Sco*to"ma\, n. [L.] (Med.)
   Scotomy.

资料来源 : WordNet®

scotoma
     n : an isolated area of diminished vision within the visual
         field
     [also: {scotomata} (pl)]