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Table 1 Difference between ERM eyes and the fellow eyes at presentation

From: Retinal-image quality and contrast sensitivity function in eyes with epiretinal membrane: a cross-sectional observational clinical study

Parameters

ERM eyes

Fellow eyes

P-value

SER (D)

0.08 ± 1.24

−0.09 ± 1.23

0.306

BCVA (logMAR)

0.48 ± 0.28

0.02 ± 0.14

< 0.001

LOCS III NC grade

2.80 ± 0.94

2.75 ± 0.87

0.486

LOCS III NO grade

2.56 ± 0.92

2.54 ± 0.89

0.781

LOCS III C grade

0.61 ± 0.87

0.65 ± 0.74

0.511

LOCS III P grade

0.05 ± 0.21

0.07 ± 0.25

0.323

OSI

3.09 ± 1.90

1.17 ± 1.11

< 0.001

Strehl ratio

0.12 ± 0.05

0.17 ± 0.05

< 0.001

Spatial frequency (cpd)

 1.5

31.55 ± 19.48

50.45 ± 22.38

< 0.001

 3

33.52 ± 26.07

64.23 ± 36.89

< 0.001

 6

28.73 ± 20.62

65.41 ± 26.44

< 0.001

 12

4.61 ± 6.79

28.16 ± 18.72

< 0.001

 18

0.86 ± 2.29

9.39 ± 6.90

< 0.001

 Total

99.27 ± 64.84

217.64 ± 85.04

< 0.001

  1. SER: spherical equivalent refractive error; D: diopter; BCVA: best corrected visual acuity; LOCS III: Lens Opacities Classification System III; NC: nuclear color; NO: nuclear opalescence; C: cortical cataract; P: posterior subcapsular cataract; OSI: objective scatter index; cpd: cycles per degree. P < 0.05 at two tails was considered to be statistically significant