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Table 2 Safety and efficacy indices of wavefront-optimized PRK retreatment

From: Wavefront-optimized surface retreatments of refractive error following previous laser refractive surgery: a retrospective study

Follow up (month) Safety Index Efficacy Index
1 0.91 0.73
3 1.00 0.81
6 1.03 0.84
  1. Safety index (post-op CDVA / pre-op CDVA)
  2. Efficacy index (post-op UDVA / pre-op CDVA)