Table 1.

Corneal densitometry values of the normal and highly myopic groups

	Normal Group (n = 100)	HM Group (n = 100)	Difference	P*
Anterior 120 μm
0–2 mm	21.0 ± 2.7	20.6 ± 2.2	0.4 ± 0.3	0.474
2–6 mm	20.6 ± 3.3	19.6 ± 2.9	1.1 ± 0.4	0.017
6–10 mm	34.2 ± 11.6	30.3 ± 13.4	3.9 ± 1.8	0.004
10–12 mm	41.1 ± 13.5	46.4 ± 14.2	− 5.3 ± 2.0	0.004
Total 0–12 mm	27.7 ± 6.1	26.7 ± 6.3	1.0 ± 0.9	0.143
Center layer
0–2 mm	12.8 ± 1.2	12.4 ± 0.9	0.4 ± 0.1	0.030
2–6 mm	13.0 ± 2.2	12.0 ± 1.7	1.0 ± 0.3	< 0.001
6–10 mm	23.0 ± 8.0	19.7 ± 8.3	3.3 ± 1.2	0.001
10–12 mm	24.1 ± 7.1	24.1 ± 6.6	0 ± 1.0	0.823
Total 0–12 mm	17.8 ± 4.2	16.2 ± 3.9	1.6 ± 0.6	0.002
Posterior 60 μm
0–2 mm	11.7 ± 1.9	10.7 ± 1.4	1.1 ± 0.2	< 0.001
2–6 mm	11.9 ± 2.3	10.5 ± 1.5	1.4 ± 0.3	< 0.001
6–10 mm	18.9 ± 4.9	16.4 ± 5.3	2.5 ± 0.7	< 0.001
10–12 mm	20.9 ± 5.5	19.0 ± 5.2	1.9 ± 0.8	0.009
Total 0–12 mm	15.4 ± 3.0	13.6 ± 2.8	1.7 ± 0.4	< 0.001
Total corneal thickness
0–2 mm	15.2 ± 1.6	14.7 ± 1.5	0.5 ± 0.2	0.028
2–6 mm	15.4 ± 3.9	14.1 ± 2.1	1.3 ± 0.4	0.001
6–10 mm	25.2 ± 8.0	22.1 ± 8.8	3.1 ± 1.2	0.002
10–12 mm	28.7 ± 7.9	30.1 ± 8.0	−1.4 ± 1.1	0.203
Total 0–12 mm	20.3 ± 4.3	18.9 ± 4.4	1.4 ± 0.6	0.008

HM high myopia; * Mann-Whitney u test for statistical analysis; numbers in bold are statistically significant results