Table 3

Age-specific means of refractive progression and standard value of hyperopia reserve by backward calculation

Age (years)	N	Refractive progression Mean±SD	Hyperopia reserve mean	Hyperopia reserve range	Proportion of baseline participants that fall within the hyperopia reserve range (%)
3	144	0.19±0.24	2.64	2.40 to 2.88	0.7
4	326	0.18±0.22	2.45	2.23 to 2.66	5.5
5	199	0.18±0.21	2.26	2.05 to 2.48	6.8
6	358	0.35±0.37	2.08	1.72 to 2.45	17.4
7	615	0.25±0.26	1.74	1.48 to 2.00	14.5
8	641	0.25±0.30	1.49	1.19 to 1.79	11.8
9	97	0.20±0.13	1.24	1.11 to 1.38	4.7
10	30	0.09±0.12	1.04	0.92 to 1.16	4.3
11	27	0.22±0.12	0.95	0.83 to 1.07	6.7
12	30	0.27±0.12	0.73	0.61 to 0.85	19.6
13	19	0.29±0.19	0.46	0.27 to 0.65	13.5
14	6	0.29±0.07	0.17	0.09 to 0.24	0.0
15	11	0.23±0.18	0.13	−0.31 to 0.06	2.7
16	9	0.15±0.18	0.35	−0.50 to –0.17	3.4
17			0.50	>−0.5