Total Argon group PASCAL group P value
  N=49 eyes N=26 eyes N=23eyes  
Before PRP        
Retinal thickness 279.84 ±26.62 280.19±26.86 279.43±26.95 0.922
Choroidal thickness 298.43±43.67 295.96±29.89 301.22±55.95 0.690
Total retinal volume 9.19±0.63 9.20±0.69 9.18±0.56 0.906
Total choroidal volume 8.12±1.10 8.17±1.03 8.06±1.20 0.726
After PRP        
Retinal thickness 308.06±50.75 314.11±63.33 301.22±31.13 0.594
Choroidal thickness 302.57±43.11 300.31±24.29 305.13±58.08 0.714
Total retinal volume 9.72±0.82 9.82±1.00 9.61±0.55 0.343
Total choroidal volume 8.16±1.17 8.22±1.08 8.08±1.27 0.682
Change after PRP        
ΔRetinal thickness 28.22±39.90 33.92±50.45 21.78±22.37 0.293
ΔChoroidal thickness 3.65±18.05 4.35±20.94 3.91±15.25 0.935
ΔTotal retinal volume 0.53±0.39 0.62±0.47 0.43±0.24 0.071
ΔTotal choroidal volume 0.04±0.30 0.05±0.27 0.03±0.35 0.766
PRP: Panretinal Photocoagulation
Table 3: Subgroup comparison (argon laser vs. PASCAL laser) of topographic changes after panretinal photocoagulation.