Completely blind.

Having the quality of ignoring gender, such as organizations that accept and/or house people together without discriminating on the basis of gender.

So intoxicated as to appear to have difficulty seeing. / Extremely drunk.

Alternative form of color blindness

Alternative spelling of deafblindness

The state or quality of being day-blind.

(simile) Nearly totally blind, having a very poor sense of vision

A dangerous curve on a roadway, around which drivers cannot see approaching traffic.

The optic condition nyctalopia, the inability to see clearly in faint light, as at night

Describing an experiment (usually medical) in which some information which might influence the experiment is withheld from two parties. Most commonly, parties in question are the subjects and the administrators and the information which is withheld is the treatment groups of the subjects.