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Table 4 Corneal topographic changes according to chalazion location

From: Effects of chalazia on corneal astigmatism

 

Control

Nasal

Middle

Temporal

Whole

p-value

n

70

10

25

4

3

 

Gender (M:F)

33:37

5:5

9:16

2:2

2:1

 

Age (year)

42.86 ± 14.18

42.20 ± 16.29

38.12 ± 13.66

43.75 ± 14.48

45.67 ± 4.51

0.679

CCT (μm)

547.46 ± 37.69

550.50 ± 19.60

542.16 ± 50.65

542.25 ± 32.40

552.33 ± 14.05

0.952

Average keratometry by ARK (D)

43.03 ± 1.72

42.44 ± 1.71

42.83 ± 2.35

44.79 ± 1.51

42.51 ± 0.88

0.411

Astigmatism by ARK (D)

-0.79 ± 0.58

−0.93 ± 1.01

−0.79 ± 58.50

−2.58 ± 3.19

−0.75 ± 0.35

0.046*

Axis by ARK (°)

101.48 ± 65.26

108.89 ± 61.53

115.00 ± 58.50

126.67 ± 70.77

105.00 ± 49.50

0.851

SimK (D)

42.96 ± 4.08

41.96 ± 1.91

42.33 ± 2.59

43.47 ± 1.62

43.86 ± 2.15

0.823

Astigmatism by simK (D)

1.17 ± 0.78

1.16 ± 1.14

1.54 ± 1.13

1.61 ± 1.79

2.30 ± 0.56

0.143

Axis by simK (°)

84.47 ± 39.20

80.00 ± 33.72

82.92 ± 27.77

103.00 ± 29.06

92.00 ± 22.54

0.843

Mean K of posterior surface (D)

−6.29 ± 0.28

−6.19 ± 0.20

−6.24 ± 0.24

−6.40 ± 0.34

−6.42 ± 0.37

0.543

Astigmatism of posterior surface (D)

−0.43 ± 0.32

−0.43 ± 0.13

−0.45 ± 0.32

−0.46 ± 0.19

−0.58 ± 0.13

0.942

Total RMS (μm)

1.71 ± 0.59

1.64 ± 0.76

2.03 ± 1.14

2.09 ± 1.48

2.37 ± 1.05

0.243

2nd order aberration (μm)

1.48 ± 0.55

1.35 ± 0.78

1.69 ± 0.82

1.90 ± 1.53

2.14 ± 0.93

0.219

Oblique astigmatism (Z−2 2; μm)

−0.05 ± 0.45

0.06 ± 0.48

0.17 ± 0.49

0.44 ± 0.82

0.58 ± 0.47

0.033*

Defocus (Z0 2; μm)

−0.87 ± 0.49

−0.75 ± 0.34

−0.94 ± 0.15

−1.09 ± 0.06

0.22 ± 1.80

0.003*

Vertical astigmatism (Z2 2; μm)

−0.59 ± 0.98

−0.56 ± 1.11

−1.00 ± 1.19

−1.18 ± 1.68

−1.51 ± 0.54

0.269

3rd order aberration (μm)

0.64 ± 0.34

0.65 ± 0.36

0.75 ± 0.66

0.67 ± 0.19

0.71 ± 0.30

0.877

Vertical trefoil (Z−3 3; μm)

−0.14 ± 0.37

−0.27 ± 0.40

−0.31 ± 0.47

−0.01 ± 0.24

0.11 ± 0.51

0.212

Vertical Coma (Z−1 3; μm)

0.48 ± 3.84

0.18 ± 0.24

0.16 ± 0.41

−0.12 ± 0.39

0.10 ± 0.46

0.986

Horizontal coma (Z1 3; μm)

−0.04 ± 0.33

−0.07 ± 0.26

−0.05 ± 0.28

0.15 ± 0.47

0.00 ± 0.24

0.820

Oblique trefoil (Z3 3; μm)

−0.01 ± 0.35

−0.12 ± 0.42

−0.13 ± 0.64

0.29 ± 0.19

0.10 ± 0.24

0.349

4th order aberration (μm)

0.40 ± 0.30

0.43 ± 0.20

0.38 ± 0.34

0.36 ± 0.07

0.56 ± 0.50

0.885

Oblique quadrefoil (Z−4 4; μm)

0.00 ± 0.07

0.03 ± 0.14

0.03 ± 0.10

0.01 ± 0.01

−0.05 ± 0.06

0.380

Oblique secondary astigmatism (Z−2 4; μm)

0.01 ± 0.11

−0.03 ± 0.12

−0.02 ± 0.12

0.15 ± 0.12

−0.14 ± 0.16

0.015*

Primary spherical (Z0 4; μm)

0.16 ± 0.30

−0.03 ± 0.12

−0.02 ± 0.12

0.20 ± 0.14

−0.11 ± 0.50

0.590

Vetical secondary astigmatism (Z2 4; μm)

0.08 ± 0.18

0.17 ± 0.26

0.20 ± 0.34

−0.03 ± 0.15

0.12 ± 0.41

0.754

Vertical quadrefoil (Z4 4; μm)

−0.12 ± 0.24

0.03 ± 0.25

0.05 ± 0.12

0.01 ± 0.20

−0.18 ± 0.39

0.710

  1. SimK simulated keratometry, ARK autorefractokeratometry, RMS root mean square, D diopter; Results were presented as mean ± standard deviation.; *Statistically significant by ANOVA