Roethlisberger was injured while being sacked Sunday night by Baltimore's Haloti Ngata, whose left hand raked across the quarterback's face during Pittsburgh's first offensive series. Ngata was not penalized but drew a fine of $15,000 from the league office for the hit.
Roethlisberger bled profusely, but was treated on the sideline and returned to the game without missing any plays. He later threw the game-winning touchdown pass as Pittsburgh rallied to win 13-10.
The operation was performed on Monday, and Roethlisberger is expected to play Sunday against Cincinnati. He also underwent nose surgery after being seriously injured in a June 2006 motorcycle accident in Pittsburgh.
However, the Steelers are seeking a punter after losing Daniel Sepulveda for the rest of the season with a torn right anterior cruciate ligament.
Sepulveda, who caught his cleats in the turf Sunday night in Baltimore, missed the 2008 season with the same injury after getting hurt on the first day of training camp.
Sepulveda's injury means the Steelers will change their kicker and punter in the same season. They released kicker Jeff Reed last month and signed Shaun Suisham, who has converted his first six field goal attempts.
Sepulveda ranks seventh among NFL punters with a 45.5 yards per punt average and is ninth in net punting with a 39.1 average.
The Steelers must find a new holder, too because Sepulveda held for all kicks.
Information from The Associated Press was used in this report.