Table 4. Mean changes of DIA, VOL and eigenlenses coefficients ( ${\hat{a}}_1,{\hat{a}}_2,{\hat{a}}_5$ and ${\hat{a}}_6$ ) between two accommodative states (0 and 4.5 D) ^a .

	Mean±SD	p-value
ΔDIA (0 D- 4.5 D)*	0.24±0.10 mm	4·10−8
ΔVOL (0 D- 4.5 D)	1.4±2.73 mm3	>0.05
Δa1 (0 D- 4.5 D)*	2.72±1.66	5·10−6
Δa2 (0 D- 4.5 D)*	-8.66±2.33	6·10−11
Δa5 (0 D- 4.5 D)*	-1.79±3.35	0.04
Δa6 (0 D- 4.5 D)*	0.42±0.53	0.004

^a p-values correspond to a paired t-test; * indicates statistically significant changes at a significance level of p<0.05.