Ogletree caught 13 passes for 199 yards in 12 games for the Lions last season. He has not played this season.
Seisay's promotion comes with the Lions' secondary facing a tough challenge Sunday against Aaron Rodgers and Green Bay. Detroit defensive backs Bill Bentley and Nevin Lawson have gone down with season-ending injuries, and cornerback Cassius Vaughn will miss Sunday's game with an ankle injury.
Safety James Ihedigbo hasn't played yet - he's doubtful for Sunday with a neck problem.