νυκτάλ·ωψ, ωπος (ὁ, ἡ) [ᾰ]
   I qui ne voit que pendant la nuit, HPC. 110 e ;
   II subst. ἡ νυκτάλωψ, nyctalopie, HPC. Epid. 1193 ; ARSTT. G.A. 5, 1, 28 ; P. ÉG. 3, 22.

Étym. pré-grec.

ωπος, ὁ, ἡ, (< νύξ, ὤψ) = ὁ τῆς νυκτὸς ὁρῶν, i.e.
suffering from day-blindness, Hp. Prorrh. 2.33, cf. Gal. 19.435, 14.776 ; ἐν οἰκίᾳ τυφλῶν καὶ ὁ ν. ὀξυδερκής prov. ap. Jo. Sic. in Rh. 6.293 W. ; but also, = ὁ τῆς νυκτὸς ἀλαός, night-blind, Gal. 19.124, cf. Plin. HN 8.203, Aët. 7.48, etc. ν.
ubi homo neque matutino tempore videt neque vespertino, Ulp. in Dig. 20.1.10.4. as Subst., incapacity to see except in bright light, night-blindness, Hp. Epid. 6.7.1, Arist. GA 780a16 (pl.), Gal. 10.84, Id. ap. Orib. Syn. 8.48.1.
day-blindness, Dem.Ophth. ap. Simon.Jan. s.v.
nictilopa.

ωπος, ὁ, ein Fehler der Augen, = νυκταλωπία, ὑγρότητος πλεονασμός, Arist. gen.an. 5.1 (p. 780.20), v.l. νυκταλώπηξ. Bei Gal. u. Eust. 1392.33 ὁ τῆς νυκτὸς ἀλαός, u. allgemein, blödsichtig.