Association between Axial Length to Corneal Curvature Radius Ratio and Myopia in Adult Patients

Table 1

Comparison of general data and ocular biological parameters between the three groups.

Variables	Mild myopia (n = 42)	Moderate myopia (n = 80)	High myopia (n = 65)	F/H/
Age, median (P25, P75) (year)	18 (18, 21.75)	21 (18, 24.25)	19 (18, 22)	2.68^c	0.262
Men, n (%)	18 (42.86%)	46 (57.50%)	35 (53.85%)	2.40^b	0.301
Intraocular pressure, median (P25, P75) (mmHg)	13 (11, 15.75)	13.50 (12, 16.25)	14 (12, 16)	1.82^c	0.403
SE, median (P25, P75) (D)	−2.25 (−2.75, −1.75)	−4.38 (−5.5, −4)	−7.25 (−8, −6.5)^†	161.85^c	<0.001
AL, mean ± SD (mm)	24.81 ± 0.83	25.74 ± 0.83	26.78 ± 1.05^†	60.87^a	<0.001
CR, mean ± SD (mm)	7.83 ± 0.27	7.78 ± 0.23	7.80 ± 0.23	0.45^a	0.637
AL/CR, mean ± SD	3.17 ± 0.06	3.31 ± 0.08	3.43 ± 0.10^†	128.21^a	<0.001
CCT, mean ± SD (μm)	553.6 ± 27.46	543.11 ± 29.51	549.46 ± 31.47	1.89^a	0.154
LT, mean ± SD (mm)	3.46 ± 0.27	3.51 ± 0.22	3.48 ± 0.18	0.86^a	0.427
ACD, mean ± SD (mm)	3.23 ± 0.27	3.28 ± 0.25	3.25 ± 0.26	0.53^a	0.590

compared to mild myopia; ^† compared to moderate myopia. ^aF value of one-way ANOVA; ^bchi-square value; ^cH value of KW H test. SE = spherical equivalent (D), determined by mydriatic refraction; AL = axial length (mm); CR = corneal curvature radius (mm); AL/CR = axial length to corneal curvature radius ratio; CCT = central corneal thickness (μm); LT = lens thickness (mm); ACD = anterior chamber depth (mm).