обладающий острым зрением

From LSJ

Οὔτοι ποθ' οὑχθρός, οὐδ' ὅταν θάνῃ, φίλος → One's enemy does not become one's friend when they die

Sophocles, Antigone, 522

Russian > Greek

ὀξυδερκής, ὀξυωπής