scotomy

Etymology
From.

Noun

 * 1)  dizziness with dimness of sight
 * 2)  obscuration of the field of vision due to the appearance of a dark spot before the eye
 * 1)  obscuration of the field of vision due to the appearance of a dark spot before the eye
 * 1)  obscuration of the field of vision due to the appearance of a dark spot before the eye