The Pittsburgh Steelers started the second half in Houston on Sunday without linebacker James Harrison on the field due to an eye injury.
The team announced during the third quarter Harrison is questionable to return against the Texans.
Harrison left the game after a violent collision with Texans offensive tackle Duane Brown on a run play during the second quarter. Harrison went down to a knee on the field after the play as he was attended to by team trainers, and appeared to be having trouble with his vision. Team personnel continued to check Harrison on the bench before the end of the first half.
It was also announced during the second half that Steelers defensive end Aaron Smith was doubtful to return with a foot injury. NFLÂ Network's Stacey Dales reports another Steelers defender -- linebacker Jason Worilds -- is also doubtful to return with a quadriceps injury.
