αὐτόπτ-ης, ου, ὁ,
seeing oneself, eyewitness, Hdt. 2.29, 3.115, al., Pl. Lg. 900a, Euang. 1.4, Din. 3.15, D. 22.22, etc.: - fem. αὐτόπτις, ἡ, Sch. Il. Oxy. 1086.96.
G845 — αὐτόπτης
ἀυτοπτου, ὁ (αὐτός, ὈΠΤΩ), seeing with one's own eyes, an eye-witness (cf. ἀυτηκως one who has himself heard a thing): [Luk 1:2]. (In Greek writings from Herodotus down.)