Mean change in visual acuity at follow-up visits. Values that were ±30 letters were assigned a value of 30. P values for difference in mean change in visual acuity from sham + prompt laser at 52 weeks: ranibizumab + prompt laser <0.001, ranibizumab + deferred laser <0.001, and triamcinolone + prompt laser groups = 0.31. Each visit week includes visits that are ±14 days, except the 52-week visit, which includes visits that occur between 308 and 420 days (between 44 and 60 weeks) from randomization, and the 104-week visit, which includes visits that occur between 616 and 840 days (between 88 and 120 weeks) from randomization.