United Plane on Approach to SFO Reports Laser Beam, Injury

Around 10:30 tonight while on UA155 listening to Channel 9 (Live ATC communications), someone from the flight deck reported to San Francisco Approach they were hit by a green laser beam aimed from the ground south of the airport. Upon touching down, medical assistance was requested. Medics and police were at the gate to meet the plane. An alert was issued for other inbound traffic of this hazard. I was on the opposite side of the plane and didn't see the actual incident. No official announcement was made of the incident or injury by the flight crew.