Table 4. Geographic location study–Form Factor as a function of distance from optic nerve head.

Comparison: Form Factor	Mean 1	Mean 2	Mean Diff.	SEM of diff.	n1	n2	q	DF	Significant?	Adjusted P Value
Macula versus Mid-Periphery	0.7455	0.7296	0.01597	0.01403	4	4	1.61	9	No	0.5159
Macula versus Far-Periphery	0.7455	0.6835	0.06205	0.01403	4	4	6.257	9	Yes	0.0042
Mid-Periphery versus Far-Periphery	0.7296	0.6835	0.04608	0.01403	4	4	4.646	9	Yes	0.0232

1-way ANOVA with Tukey analysis of Form Factor. Geographic spots or locations were defined as in Figure 2A and Table 2. The data suggest that cells in the far periphery had reduced form factors than those in the macula and mid-periphery.