εὐδίοπτος
From LSJ
εἰ ἀποκρυπτόντων τῶν Μήδων τὸν ἥλιον ὑπὸ σκιῇ ἔσοιτο πρὸς αὐτοὺς ἡ μάχη καὶ οὐκ ἐν ἡλίῳ → if the Medes hid the sun, the battle would be to them in the shade and not in the sun
English (LSJ)
ον,
A easy to see through, Arist.PA658a5, Pr.932b8 (Comp.), cf. Thphr.Sens.80; τὸ εὐ. τῆς θαλάσσης Arist.GA779b31.
German (Pape)
[Seite 1062] gut zu durchsehen, durchsichtig, Arist. oft, z. B. Probl. 21, 8, 9, im comparat.