Table 3.

Retinal layer thickness in eyes with geographic atrophy and age-matched controls

Retina layers	Healthy Control eyes (SD) μm	GA eyes (SD) μm	P value	Normalized deviation of thickness in GA region	P value (compared to 0)	Normalized deviation of thickness in GA rims	P value (compared to 0)	Normalized deviation of thickness in non-GA region	P value (compared to 0)
NFL	24.4 (3.2)	26.0 (2.8)	0.23	0.10	0.29	0.04	0.52	0.08	0.18
GCC	76.3 (5.3)	73.9 (4.4)	0.27	0.01	0.79	−0.03	0.17	0.00	0.92
INL	37.5 (2.3)	36.5 (4.3)	0.55	0.002	0.96	−0.05	0.25	−0.02	0.64
OPL	24.3 (4.7)	27.6 (3.5)	0.09	0.22	0.006	0.11	0.06	0.14	0.08
Photoreceptor	110.0 (10.1)	90.2 (12.1)	0.001	−0.64	<0.001	−0.35	<0.001	−0.19	0.03
Whole retina	272.4 (12.4)	254.3 (9.6)	0.002	−0.15	<0.001	−0.08	<0.001	−0.02	0.14

NFL: nerve fiber layer; GCC: ganglion cell layer complex, including ganglion cell body layer and inner plexiform layer; INL: inner nuclear layer; OPL: outer plexiform layer; SD: standard deviation; GA: geographic atrophy