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Table 3 Comparison between the control group and study groups as regards inner nuclear layer, outer nuclear layer and RPE-IS/OS complex thicknesses at the macula using independent sample t-test

From: Structural changes of the macula and optic nerve head in the remaining eyes after enucleation for retinoblastoma: an optical coherence tomography study

 

Control group

Study group (I)

Study group (II)

P-value [control group versus study group (I)]

P-value [control group versus study group (II)]

P-value [study group (I) versus study group (II)

Mean (μm) ± SD

F. Inner nuclear layer thickness

3 mm ring

Superior

84.13 ± 9.72

85.25 ± 8.53

80.57 ± 15.76

0.71

0.58

0.49

Nasal

82.55 ± 11.97

82.41 ± 12.33

83.71 ± 12.75

0.97

0.83

0.83

Temporal

76.64 ± 5.43

75.17 ± 7.14

74.85 ± 7.65

0.52

0.57

0.93

Inferior

79.52 ± 9.09

80.17 ± 6.28

74.86 ± 11.24

0.79

0.34

0.28

6 mm ring

      

Superior

69.87 ± 20.27

65.33 ± 4.67

64.43 ± 7.20

0.25

0.24

0.77

Nasal

69.64 ± 8.04

69.08 ± 5.14

68.15 ± 10.12

0.78

0.72

0.82

Temporal

67.29 ± 4.66

66.0 ± 2.0a

64.71 ± 4.15

0.61b

0.18

0.61b

Inferior

67.54 ± 7.86

66.75 ± 4.81

62.71 ± 9.55

0.69

0.25

0.33

G. Outer retinal layers thickness

• ONL thickness

1 mm central thickness

85.38 ± 11.51

82.91 ± 9.93

79.00 ± 6.42

0.49

0.06

0.31

3 mm ring

Superior

66.96 ± 9.06

67.41 ± 8.26

64.57 ± 11.41

0.87

0.62

0.57

Nasal

72.41 ± 9.95

69.08 ± 13.37

62.58 ± 9.46

0.45

0.04

0.23

Temporal

72.06 ± 9.34

73.83 ± 6.22

64.57 ± 10.58

0.47

0.12

0.06

Inferior

67.87 ± 11.28

68.25 ± 12.7

65.85 ± 6.84

0.93

0.54

0.61

6 mm ring

      

Superior

64.22 ± 7.71

65.25 ± 6.59

58.71 ± 6.34

0.67

0.07

0.05

Nasal

63.51 ± 9.05

66.0 ± 17.75a

57.14 ± 5.89

0.90b

0.04

0.17b

Temporal

64.48 ± 8.57

67.16 ± 5.13

61.28 ± 6.77

0.22

0.31

0.07

Inferior

59.25 ± 9.63

60.08 ± 8.24

54.00 ± 4.86

0.78

0.05

0.05

• RPE- IS/OS layer

1 mm central thickness

75.06 ± 2.89

75.0 ± 1.95

74.28 ± 2.43

0.93

0.48

0.52

3 mm ring

Superior

68.52 ± 3.81

67.25 ± 2.59

68.00 ± 4.00

0.22

0.76

0.67

Nasal

69.09 ± 2.99

68.67 ± 2.35

67.71 ± 1.70

0.62

0.12

0.32

Temporal

68.93 ± 3.13

68.67 ± 3.20

68.71 ± 3.25

0.81

0.87

0.97

Inferior

67.93 ± 3.73

68.08 ± 2.81

66.72 ± 1.97

0.89

0.24

0.23

6 mm ring

Superior

68.51 ± 2.58

66.50 ± 2.61

66.28 ± 2.21

0.03

0.04

0.85

Nasal

67.42 ± 2.17

66.58 ± 2.93

65.57 ± 2.37

0.38

0.09

0.42

Temporal

66.19 ± 2.73

65.91 ± 2.50

65.0 ± 4.0a

0.75

0.04b

0.31b

Inferior

66.61 ± 2.17

66.00 ± 2.73

65.71 ± 2.14

0.49

0.34

0.80

  1. SD, standard deviation; μm, micron
  2. aMedian ± Interquartile range;bComparison by Mann Whitney U test