LASIK-Xtra group A 65 eyes (plano target) 12 months postop
  20/12.5 20/16 20/20 20/25 20/32 20/40
Postop UDVA 0 41.5 90.8 95.4 96.9 100
Preop CDVA 0 12.3 73.8 86.2 95.4 98.5

Snellen visual acuity measurement for patients in the LASIK-Xtra group.