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. 2021 Oct 21;15:4247–4257. doi: 10.2147/OPTH.S331860

Table 3.

Intermediate Visual Acuity with ETDRS Charts and Reading Speeds at 40, 60 and 80 cm and Contrast Sensitivity with CSV-1000 at Postoperative Visits from 1 Week to 12 Months

Mean±SD 1 Week 1 Month 3 Months 6 Months 1 Year p-Value*
ETDRS (logMAR) 60 cm UCIVA 0.04±0.09 0.03±0.09 0.03±0.10 0.02±0.10 0.01±0.09 0.88
DCIVA 0.03±0.07 0.02±0.07 0.02±0.07 0.01±0.20 0.00±0.20 0.94
p-Value** 0.76 0.65 0.77 0.81 0.80
80 cm UCIVA 0.05±0.08 0.05±0.08 0.05±0.09 0.04±0.08 0.03±0.08 0.80
DCIVA 0.04±0.08 0.04±0.08 0.04±0.08 0.03±0.07 0.02±0.08 0.86
p-Value** 0.44 0.52 0.66 0.64 0.64
Reading speed (wpm) 40 cm Uncorrected 120±41 127±34 126±33 130±33 133±30 0.64
Corrected 131±51 137±41 138±41 141±39 144±37 0.80
p-Value** 0.35 0.31 0.21 0.25 0.21
60 cm Uncorrected 152±39 164±40 165±43 168±44 170±42 0.45
Corrected 158±51 164±45 164±44 169±44 171±42 0.79
p-Value** 0.60 0.98 0.85 0.95 0.90
80 cm Uncorrected 145±36 150±37 151±35 158±36 160±35 0.51
Corrected 157±47 159±42 163±41 168±39 171±37 0.63
p-Value** 0.28 0.42 0.22 0.30 0.21
CSV 1000 (logMAR) A (3.0) 1.47±0.18 1.52±0.18 1.53±0.17 1.53±0.15 1.54±0.13 0.18
B (6.0) 1.66±0.18 1.70±0.17 1.72±0.16 1.73±0.16 1.74±0.15 0.09
C (12.0) 1.33±0.18 1.34±0.22 1.38±0.20 1.39±0.20 1.40±0.20 0.27
D (18.0) 0.82±0.24 0.86±0.23 0.91±0.23 0.89±0.22 0.90±0.21 0.17

Notes: p-Values: *calculated using ANOVA single-factor test; **calculated using independent t-test.

Abbreviations: UCIVA, uncorrected intermediate visual acuity; DCIVA, distance corrected intermediate visual acuity; wpm, words per minute; CSV, contrast sensitivity (Vector Vision); SD, standard deviation.