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

Table 2

Choroidal thickness using the ETDRS grid.

ETDRS sector	Young healthy (group 1)		Aged healthy (group 2)		Young myopic (group 3)		Aged diabetic (group 4)
	Mean (μm)	SD	Mean (μm)	SD	Mean (μm)	SD	Mean (μm)	SD
Center	315.73	37.12	237.75	68.57	239.00	60.30	186.24	69.89
Inner temporal	317.65	72.30	231.30	62.62	246.10	60.85	175.73	67.17
Inner superior	309.11	68.58	240.35	62.92	240.79	60.04	191.68	76.31
Inner nasal	285.95	70.71	218.63	70.19	201.57	59.60	173.82	75.09
Inner inferior	317.22	73.91	219.31	65.44	231.03	62.13	174.61	68.70
Outer temporal	300.63	70.89	212.80	56.27	240.70	58.47	160.24	59.38
Outer superior	312.02	67.68	235.46	63.92	247.78	61.79	185.55	68.34
Outer nasal	224.53	68.67	169.29	70.70	150.73	51.19	137.06	71.78
Outer inferior	302.42	74.12	199.13	62.81	228.59	56.20	160.28	63.21
Sector of the new division
Zone 1 nasal	234.71	93.06	169.33	73.10	175.31	77.57	137.57	71.43
Zone 1 temporal	232.19	80.77	170.32	66.48	184.43	79.29	137.93	62.21
Zone 2 nasal	255.33	87.33	178.05	66.33	189.50	69.62	142.66	64.57
Zone 2 temporal	253.88	75.41	181.00	63.64	196.54	70.98	141.28	59.14
Zone 3 nasal	279.29	70.04	196.30	62.86	206.77	64.19	154.60	64.39
Zone 3 temporal	277.77	71.42	198.19	62.05	214.47	62.26	155.73	60.61
Zone 4 nasal	304.85	71.60	217.00	59.71	229.41	57.96	172.11	64.49
Zone 4 temporal	303.68	66.63	218.29	60.37	235.26	56.23	174.23	62.90
Zone 5 nasal	320.93	67.90	234.10	59.93	246.21	58.39	185.62	66.61
Zone 5 temporal	320.92	67.37	236.51	60.98	250.50	56.96	189.76	66.24