διασκοπιάομαι
From LSJ
ὀφθαλμοὶ γὰρ τῶν ὤτων ἀκριβέστεροι μάρτυρες → the eyes are more accurate witnesses than the ears, the eyes are more exact witnesses than the ears
English (LSJ)
A watch as from a σκοπιά: hence, spy out, σε . . προέηκε διασκοπιᾶσθαι ἕκαστα, of Dolon, Il.10.388; discern, distinguish, ἀργαλέον . . διασκοπιᾶσθαι ἕκαστον 17.252.