Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
καταβλέψαι to look LXX.Exod.3.6
κατέβλεψαν looked down LXX.Gen.18.16

Liddell-Scott-Jones

καταβλέπω (katablepō) to look down G:V

καταβλέπω,

look down at, [LXX+1st c.AD+]; view, [Refs]

__b metaphorically, despise, [Refs 2nd c.AD+]
__2 examine, contemplate, [Refs 3rd c.BC+]

LSJ Scripture Refs: LXX.Gen.18.16