Table 3.

ELISA VEGF: pg VEGF of the primary visual cortex over mg primary visual cortex total protein (10×) at various ages of postnatal development divided into 3 periods (precritical period, critical period, postcritical period) for C, DR, DR-EE, and EE rats (mean value of ROD 10× ± SEM; percentage of difference and statistical significance, P value; n = 8 for each of the experimental and control condition in precritical period; n = 12 in critical period; n = 12 in postcritical period) (1-way ANOVA test with post hoc correction)

Age (period)	C	DR	DR-EE	EE
Precritical	21.49 ± 2.31	18.88 ± 5.59	22.69 ± 5.10	32.84 ± 7.42
Critical	32.86 ± 4.92	19.85 ± 2.14	17.52 ± 3.73	47.70 ± 4.79
Postcritical	23.88 ± 3.67	13.53 ± 2.39	18.60 ± 3.30	27.68 ± 3.88

Age (period)	C versus DR		C versus DR-EE		C versus EE		DR versus DR-EE
	% Diff.	P	% Diff.	P	% Diff.	P	% Diff.	P
Precritical	−12.14	0.655	5.58	0.835	52.82	0.215	20.18	0.630
Critical	−39.59	0.035	−46.68	0.045	45.16	0.043	−11.73	0.570
Postcritical	−43.34	0.041	−22.11	0.347	15.91	0.485	37.47	0.223