Table 2.

The mean photoreceptor outer segment length (PROS) of the subjects

PROS length (µm)		N	Mean	95% confidence interval for mean
				Lower bound	Upper bound
Nasal1500	Control	45	46.13 ± 3.0	45.22	47.04
	<5 years	30	46.16 ± 2.8	45.11	47.22
	≥5 years	44	49.05 ± 3.1	48.09	50.01
Nasal1000	Control	45	48.24 ± 3.5	47.17	49.31
	<5 years	30	48.73 ± 3.8	47.29	50.17
	≥5 years	44	51.20 ± 4.1	49.94	52.46
Nasal500	Control	45	51.06 ± 3.6	49.98	52.15
	<5 years	30	52.60 ± 4.7	50.83	54.36
	≥5 years	44	54.50 ± 3.5	53.40	55.59
Subfoveal	Control	45	59.15 ± 4.1	57.91	60.39
	<5 years	30	60.73 ± 4.7	58.95	62.51
	≥5 years	44	62.17 ± 3.5	61.09	63.24
Temporal500	Control	45	51.04 ± 2.8	50.17	51.91
	<5 years	30	51.96 ± 3.6	50.59	53.34
	≥5 years	44	53.60 ± 3.3	52.57	54.62
Temporal1000	Control	45	48.84 ± 2.9	47.96	49.72
	<5 years	30	49.40 ± 3.0	48.27	50.52
	≥5 years	44	51.40 ± 3.4	50.34	52.46
Temporal1500	Control	45	46.64 ± 3.3	45.62	47.65
	<5 years	30	47.50 ± 3.0	46.34	48.65
	≥5 years	44	50.72 ± 4.1	49.47	51.98