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Table 5 Preoperative CDVA obtained under different refractive values in the case example

From: Mutual comparative analysis: a new topography-guided custom ablation protocol referencing subjective refraction to modify corneal topographic data

Refraction CDVA (Snellen)
−3.00 D 20/40
−2.50 D, −0.25 D × 170° 20/40
−2.75 D, −0.25 D × 170° 20/32
−3.00 D, −0.25 D × 170° 20/32
−3.00 D, −0.50 D × 170° 20/20
−2.75 D, −0.50  D × 170° 20/20
−3.25 D, −0.50 D × 170° 20/32
−3.00 D, −0.75 D × 170° 20/32
−2.75 D, −0.75 D × 170° 20/32
−3.00 D, −0.50 D × 20° 20/40
−3.00 D, −0.50 D × 90° 20/63
−3.00 D, −0.50 D × 140° 20/20
−3.00 D, −0.50 D × 175° 20/32
  1. CDVA= corrected distance visual acuity