Table 1 Clinical measures of visual function and visual performance in each task.

From: Evaluation of eye movements and visual performance in patients with cataract

Variables

Preoperative

Postoperative

Significance

mean ± SD

range

mean ± SD

range

 

Visual acuity

   OD (logMAR)

0.41 ± 0.24

0.10–1.00

0.15 ± 0.14

0.00–0.50

Z = −4.15, P < 0.001

   OS (logMAR)

0.48 ± 0.28

0.20–1.20

0.20 ± 0.21

0.00–0.70

Z = −4.57, P < 0.001

LOCS III grading

   NO, OD

3.17 ± 0.87

2.0–5.0

/

/

/

   C, OD

2.43 ± 0.68

1.0–4.0

/

/

/

   P, OD

1.67 ± 0.55

0.1–4.0

/

/

/

   NO, OS

3.07 ± 0.83

2.0–5.0

/

/

/

   C, OS

2.27 ± 0.91

1.0–4.0

/

/

/

   P, OS

1.60 ± 1.16

0.1–4.0

/

/

/

Visual search task

   Percentage of correctly identified items (%)

75.86 ± 16.42

33.33–100.00

85.19 ± 9.90

58.33–100.00

Z = −1.97, P = 0.049

   Average search time (s)

1.80 ± 0.53

0.78–2.82

1.27 ± 0.49

0.54–2.26

t = 4.03, P < 0.001

Face recognition task

   Percentage of correctly identified faces (%)

83.33 ± 23.13

16.67–100.00

95.24 ± 11.00

66.67–100.00

Z = −2.85, P = 0.004

   Average search time (s)

1.29 ± 0.71

0.30–3.12

1.05 ± 0.65

0.44–1.05

Z = −1.98, P = 0.048

Reading task

   Reading speed (chars/s)

4.36 ± 1.65

1.80–7.06

5.82 ± 1.91

2.48–9.00

t = 6.12, P < 0.001

  1. SD: standard deviation; LOCS III, Lens Opacities Classification System III; NO, nuclear opalescence; C, cortical; P, posterior subcapsular.