nyctalopia
n. இரவுக் குருடு, மாலைக்கண், இருட்டில் மட்டும் தௌதவாகப் பார்வையுடைய.
Nyc`ta*lo"pi*a, n. Etym: [L. nyctalopia, fr. nyctalops a nyctalops, Gr. (Med.) (a) A disease of the eye, in consequence of which the patient can see well in a faint light or at twilight, but is unable to see during the day or in a strong light; day blindness. (b) See Moonblink. Note: Some writers (as Quain) use the word in the opposite sense, night blindness. See Hemeralopia.