ὀξυδερκία
From LSJ
Ἐς δὲ τὰ ἔσχατα νουσήματα αἱ ἔσχαται θεραπεῖαι ἐς ἀκριβείην, κράτισται → But for extreme illnesses, extreme remedies, applied with severe exactitude, are the best (Hippocrates, Aphorism 6)
English (LSJ)
ἡ,
A sharp-sightedness, αἰσθήσεων Epicur.Nat.28Fr.6, cf. Apollod. 3.10.3, Gal.14.241, Alex.Aphr.in Top.258.17, etc.: Ion. ὀξυ-δερκείη Democr.119.