(a.) Having dim sight; lacking perception.

ableptical amaurotic backward bereft of light blind color-blind dark dim-sighted empty-headed eyeless hemeralopic ignorant illiterate in darkness in the dark know-nothing mind-blind naive night-overtaken nyctalopic rayless sightless spiritually blind stark blind stone-blind undiscerning uneducated unenlightened uninformed uninstructed unlettered unobserving unperceiving unprogressive unschooled unseeing untaught untutored visionless