Table 2 Optic disc parameters by myopia group.

BMO morphometrics

77 (128 eyes)

118 (185 eyes)

51 (61 eyes)

Ovality index

0.88 (0.86, 0.89)

0.89 (0.88, 0.90)

0.85 (0.84, 0.87)

0.003^{2, 3} (0.007³)

Tilt angle (°)

1.7 (1.4, 2.0)

2.0 (1.8, 2.2)

3.4 (3.1, 3.8)

< 0.001^{2, 3} (< 0.001^{2, 3})

Rotation angle (°)

36.1 (32.6, 39.7)

35.0 (32.1, 37.9)

36.7 (31.4, 42.0)

0.818 (0.803)

RNFL thickness (µm)

81 (145 eyes)

128 (214 eyes)

68 (93 eyes)

Global

67.1 (64.2, 70.0)

65.2 (62.8, 67.6)

67.5 (64.0, 70.9)

0.427 (0.419)

Temporal

52.6 (49.7, 55.5)

54.6 (52.2, 56.9)

58.8 (55.4, 62.3)

0.024^{2, 3} (0.029^{2, 3})

Superotemporal

85.9 (80.9, 90.9)

81.5 (77.4, 85.7)

85.2 (79.2, 91.3)

0.332 (0.284)

Inferotemporal

89.9 (83.6, 96.1)

82.8 (77.6, 87.9)

89.2 (81.7, 96.7)

0.135 (0.139)

Nasal

57.6 (54.8, 60.4)

58.0 (55.7, 60.3)

57.7 (54.3, 61.1)

0.972 (0.934)

Superonasal

77.4 (73.0, 81.7)

72.2 (68.6, 75.8)

71.4 (66.1, 76.7)

0.122 (0.120)

Inferonasal

73.4 (69.0, 77.9)

68.1 (64.5, 71.7)

70.3 (65.1, 75.6)

0.162 (0.227)

BMO-MRW (µm)

80 (142 eyes)

124 (204 eyes)

59 (78 eyes)

Global

199.1 (188.8, 209.4)

192.4 (183.8, 201.0)

188.0 (174.8, 201.2)

0.387 (0.392)

Temporal

148.9 (140.4, 157.5)

148.3 (141.1, 155.4)

155.6 (144.6, 166.6)

0.513 (0.784)

Superotemporal

179.4 (166.4, 192.3)

162.6 (151.8, 173.4)

170.9 (154.2, 187.5)

0.128¹ (0.102¹)

Inferotemporal

182.4 (167.6, 197.3)

177.2 (164.7, 189.6)

178.5 (159.4, 197.7)

0.856 (0.945)

Nasal

226.2 (212.7, 239.7)

228.8 (217.5, 240.0)

211.1 (193.7, 228.5)

0.226 (0.262)

Superonasal

226.9 (213.9, 239.9)

206.6 (195.7, 217.5)

192.0 (175.3, 208.8)

0.004^{1, 2} (0.003^{1, 2})

Inferonasal

243.9 (228.9, 258.9)

224.2 (211.7, 236.7)

217.0 (197.6, 236.4)

0.052^{1, 2} (0.121)

Choroidal thickness (µm)

76 (135 eyes)

126 (203 eyes)

47 (61 eyes)

Global

135.8 (125.4, 146.2)

122.3 (113.9, 130.8)

109.8 (96.4, 123.1)

0.006^{1, 2} (< 0.001^{1, 2, 3})

Temporal

140.8 (129.0, 152.6)

121.0 (111.5, 130.6)

95.0 (79.6, 110.5)

< 0.001^{1, 2, 3} (< 0.001^{1, 2, 3})

Superotemporal

152.5 (140.3, 164.6)

136.6 (126.8, 146.5)

114.1 (98.2, 130.0)

0.001^{1, 2, 3} (< 0.001^{1, 2, 3})

Inferotemporal

106.5 (97.2, 115.8)

95.1 (87.5, 102.6)

82.7 (70.6, 94.8)

0.007^{1, 2} (< 0.001^{1, 2, 3})

Nasal

142.7 (130.9, 154.4)

131.4 (121.8, 140.9)

128.6 (113.3, 144.0)

0.207 (0.029^{1, 2})

Superonasal

152.8 (140.2, 165.4)

140.9 (130.7, 151.1)

128.7 (112.1, 145.2)

0.062² (0.003^{1, 2})

Inferonasal

111.2 (101.3, 121.1)

100.7 (92.7, 108.7)

100.0 (87.0, 112.9)

0.181 (0.020^{1, 2})