Table 2.

Lens technique divided into age bins (5 years/bin). The mean and standard deviation for the accommodative response, accommodative demand and the accommodative gain (AG) are listed for each condition. AG was calculated by dividing the accommodative response by the accommodative demand for each individual.

Age (years)		Condition 1		Condition 2		Condition 3		Condition 4		Condition 5		Condition 6*
			AG		AG		AG		AG		AG		AG
5–9	Response	4.97±1.75	0.78±0.11	5.41±1.78	0.75±0.10	6.11±1.58	0.76±0.07	7.00±1.67	0.76±0.07	6.56±2.12	0.67±0.18	6.82±1.28	0.68±0.09
	Demand	6.30±1.74		7.15±1.70		8.00±1.66		8.79±1.62		9.58±1.59		9.87±1.11
10–14	Response	4.72±1.51	0.76±0.08	5.32±1.51	0.75±0.07	6.01±1.52	0.76±0.10	6.5±1.45	0.75±0.09	6.60±1.33	0.69±0.07	6.60±1.66	0.64±0.12
	Demand	6.14±1.70		6.99±1.66		7.82±1.62		8.63±1.58		9.43±1.55		10.1±1.54
15–19	Response	3.81±1.38	0.73±0.10	4.69±1.33	0.77±0.08	5.32±1.32	0.77±0.07	5.91±1.26	0.76±0.06	5.97±1.41	0.69±0.10	6.06±1.71	0.65±0.13
	Demand	5.14±1.50		6.01±1.46		6.87±1.43		7.70±1.40		8.51±1.37		9.23±1.35
20–24	Response	3.82±1.59	0.74±0.13	4.56±1.38	0.77±0.08	5.19±1.39	0.76±0.08	5.66±1.33	0.74±0.07	5.87±1.31	0.69±0.08	5.72±1.45	0.62±0.012
	Demand	4.97±1.40		5.84±1.37		6.70±1.34		7.53±1.32		8.34±1.29		9.15±1.27
25–29	Response	3.29±1.04	0.76±0.12	4.03±1.01	0.78±0.09	4.71±1.09	0.78±0.10	5.19±1.05	0.75±0.09	5.11±1.13	0.66±0.1	5.04±1.35	0.59±0.13
	Demand	4.19±0.81		5.09±0.79		5.96±0.77		6.81±0.76		7.65±0.74		8.47±0.73
30–35	Response	3.01±1.04	0.76±0.09	3.77±1.04	0.78±0.11	4.38±0.84	0.77±0.06	4.86±0.76	0.74±0.06	4.88±0.75	0.66±0.07	4.79±0.56	0.59±0.05
	Demand	3.91±0.99		4.81±0.96		5.68±0.94		6.54±0.92		7.38±0.90		7.38±0.90

(* Note that Conditions 1–5 included subjects that had data for all Conditions from 1–5 (n = 130), whereas Condition 6 included fewer subjects since not all subjects had data for Condition 6 (n = 125)).