Forward Reeves Nelson will back on the floor for UCLA's Pac-10 Tournament matchup against Arizona on Thursday at noon. Nelson sat out the last four games due to a partially torn retina. His condition is a concern because he has a family history of eye problems; his grandmother has detached retinas in both eyes and is legally blind. Furthermore, Nelson has suffered a number of injuries to his eyes and face this year. However, he has been cleared to play, so he will return to the lineup on Thursday.