Distribution of Choroidal Thinning in High Myopia, Diabetes Mellitus, and Aging: A Swept-Source OCT Study

Table 3

Choroidal thickness comparison between groups.

ETDRS region	Groups 1-2		Groups 1–3		Groups 2–4
	CT reduction (μm)		CT reduction (μm)		CT reduction (μm)
Center	77.98	<0.001	76.73	<0.001	51.52	<0.001
Inner temporal	86.36	<0.001	71.54	<0.001	55.57	<0.001
Inner superior	68.77	<0.001	68.32	<0.001	48.66	<0.001
Inner nasal	67.30	<0.001	84.38	<0.001	44.81	<0.001
Inner inferior	97.89	<0.001	86.19	<0.001	44.70	<0.001
Outer temporal	87.83	<0.001	52.93	<0.001	52.56	<0.001
Outer superior	76.58	<0.001	64.25	<0.001	49.91	<0.001
Outer nasal	55.25	<0.001	73.80	<0.001	32.22	<0.001
Outer inferior	103.28	<0.001	73.83	<0.001	38.85	<0.001
Sector of the new division
Zone 1 nasal	65.38	<0.001	59.40	<0.001	31.76	<0.001
Zone 1 temporal	61.88	<0.001	47.76	<0.001	32.38	<0.001
Zone 2 nasal	77.27	<0.001	65.83	<0.001	35.39	<0.001
Zone 2 temporal	72.89	<0.001	57.34	<0.001	39.72	<0.001
Zone 3 nasal	82.99	<0.001	72.52	<0.001	41.69	<0.001
Zone 3 temporal	79.57	<0.001	63.29	<0.001	42.47	<0.001
Zone 4 nasal	87.85	<0.001	75.44	<0.001	44.89	<0.001
Zone 4 temporal	85.39	<0.001	68.42	<0.001	44.05	<0.001
Zone 5 nasal	86.83	<0.001	74.71	<0.001	48.48	<0.001
Zone 5 temporal	84.40	<0.001	70.42	<0.001	46.76	<0.001