Small Aircraft
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (mon) 4
Troubleshooting; Distraction; Situational Awareness
Other LASER
Air Traffic Control Issued Advisory / Alert; Flight Crew Landed As Precaution
Human Factors
Aircraft X was in right traffic for RWY 31 doing touch-&-gos.  On the second approach; the flight instructor reported an unauthorized laser illumination event 1NM final; 800MSL; green.  I asked the pilot if they wanted to switch to right traffic runway 20 to avoid the area where the event occurred.  The pilot advised if they received a second laser event (which would be their 3rd approach); they would request runway 20.  On the 3rd approach the same laser event at the same location occurred.  On the up wind; for what would be the 4th approach Aircraft X requested and landed runway 20 without incident.  I believe the pilot mentioned there were 3 persons on board (including himself) with no injuries.  The Controller In Charge (CIC) followed the order in our emergency binder and notified all concerned including local law enforcement; filled out an MOR; and all positions broadcast the information as required in 7110.65.
HIO Controller reports of an aircraft in the VFR pattern that reported multiple laser illuminations while on final.