The present disclosure relates to fiber optic connection systems (5) including a fiber optic adapter (10) having shutter assemblies (34, 17) for obstructing laser beams to protect a person's eyes. The shutter assemblies (34, 17) are spring biased and pivotally movable between closed and open positions. In certain examples, the shutter assemblies (34, 17) can include an integrated locking member (48) that snaps into the fiber optic connectors (12, 14) to hold/retain the connectors in first and second ports (20, 24).