Metrum 3
Vision returns to B.'s eyes.Meter: Dactylic hexameter ( - W - W - W - W - u u - -) alternating with dactylic tetrameter ( - W - W - W - u u). The last foot of the tetrameter is always a dactyl; that is, alternate lines may end in a short syllable and the end of the line does not make position.
discussa . . . nocte: ablative absolute.
ut: "just as," introduces a simile that fills the rest of the metrum: "just as, when . . . (lines 3-6), if Boreas (lines 7-8). . . , [then] Phoebus flashes (lines 9-10)." glomerantur sidera: obscure; sidera may mean "bad weather," but some emend to nubila . Coro: < Corus , the north-west wind. polus: "the arch of heaven."
caelo: dative of place to which (a poetic usage). venientibus astris: ablative absolute.
hanc: sc. noctem . Threicio: "Thracian." Boreas: nominative, "the north wind."
reseret: < resero , "unbar, unlock."
ferit: < ferio , "strike, smite."