scotoma

Another memorable image is a scientific illustration of “a scintillating scotoma, one of many manifestations of migraine aura.”

In the spectrum’s wake was an area of diminished vision called a scotoma.

Harris’ attempted self-exoneration didn’t help, either — it merely revealed a moral scotoma in his understanding of gender, sexism and related issues.

When he closed his left eye Sacks “amputated” his leg by moving his gaze until it was contained within the scotoma.

He even pulled out a fancy word — scotoma — to explain the philosophy.