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Table 4 Laser treatment parameters between groups A and B

From: Metamizole versus placebo for panretinal photocoagulation pain control: a prospective double-masked randomized controlled study

  Number of spots Aim size (microns) Power (milliwatts) Exposure time (milliseconds)
Placebo Metamizole Placebo Metamizole Placebo Metamizole Placebo Metamizole
Mean 496.90 509.33 245.24 245.24 277.62 276.90 200.00 200.00
SD 58.85 42.88 14.85 14.85 87.08 88.02 0.00 0.00
p value 0.32 1.00 0.31 1.00
  1. No difference was found between groups A and B regarding laser parameters