Night-blindness
131Nyctalopia — Nyc ta*lo pi*a (n[i^]k t[.a]*l[=o] p[i^]*[.a]), n. [L. nyctalopia, fr. nyctalops a nyctalops, Gr. nykta lwps. Gr. nykta lwps meant, a person affected either with day blindness or with night blindness, and in the former case was derived fr. ny x,… …
132vitamin A — a yellow, fat soluble, solid terpene alcohol, C20H30O, obtained from carotene and occurring in green and yellow vegetables, egg yolk, etc.: essential to growth, the protection of epithelial tissue, and the prevention of night blindness. Also… …
