Table 6. Geographic location study–Polygonality of cells as a function of distance from optic nerve head.

Comparison: Polygonality	Mean 1	Mean 2	Mean Diff.	SEM of diff.	n1	n2	q	DF	Significant?	Adjusted P Value
Macula versus Mid-Periphery	5.67	5.692	−0.02184	0.04011	4	4	0.7701	9	No	0.8518
Macula versus Far-Periphery	5.67	5.497	0.1725	0.04011	4	4	6.084	9	Yes	0.0051
Mid-Periphery versus Far-Periphery	5.692	5.497	0.1944	0.04011	4	4	6.854	9	Yes	0.0024

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