Maximum human objectively measured pharmacologically stimulated accommodative amplitude

Figures & data

Figure 1 Box plot of accommodative amplitude versus iris color showing the medians and 25% and 75% quartiles.

Abbreviations: AA, accommodative amplitude; IC, iris color.

Table 1 Age, IC, pre- and postpilocarpine mean keratometry, SER, refractive cylinder, pupil size, and accommodative amplitude

Subject	IC	Age (years)	Prepilocarpine				Postpilocarpine
			Mean K (diopters)	SER (diopters)	Cyl (diopters)	Pupil (mm)	Mean K (diopters)	SER (diopters)	Cyl (diopters)	Pupil (mm)	AA (diopters)
1	Brown	24	43.87	−0.12	0.62	8.1	43.50	−10.25	0.87	3.4	10.13
2	Blue	20	45.62	0.00	1.12	6.6	45.50	−9.25	0.75	3.0	9.25
3	Green	19	43.25	−0.37	0.25	7.2	43.50	−9.62	1.12	3.8	9.25
4	Brown	19	41.25	−0.62	0.12	9.1	41.12	−4.37	0.25	3.2	3.75
5	Blue	20	44.00	1.50	1.25	7.0	43.37	−9.75	0.50	7.2	11.25
6	Blue	20	42.37	−0.62	0.25	8.2	45.75	−16.00	0.75	7.4	15.38
7	Hazel	20	39.50	1.37	0.37	8.2	40.37	−8.37	0.37	3.2	9.74
8	Blue	19	42.12	−0.75	0.75	7.6	42.25	−5.12	0.50	7.0	4.37
9	Green	20	47.37	−4.25	1.00	7.7	44.00	−14.75	1.25	7.6	10.50
10	Blue	20	47.25	−0.62	0.25	6.6	43.87	−5.50	0.87	6.3	4.88
11	Hazel	20	43.50	−0.75	0.87	8.2	43.25	−13.87	0.37	4.8	13.12
12	Green	20	42.87	−0.37	0.37	8.6	42.25	−17.25	0.37	6.4	16.88
13	Brown	19	44.87	−1.25	0.50	8.7	44.87	−4.75	0.50	6.2	3.50
14	Blue	19	44.25	0.25	1.00	8.9	44.00	−13.37	1.75	6.9	13.62
15	Hazel	19	40.62	0.75	0.50	8.4	40.62	−4.19	0.37	5.8	4.94
16	Green	19	43.00	0.12	0.12	7.8	43.00	−4.31	0.12	7.6	4.43
17	Green	19	44.62	−0.37	3.00	6.6	44.37	−3.87	2.87	3.7	3.50
18	Brown	22	42.37	−3.12	0.62	8.9	42.37	−19.37	1.37	6.5	16.25
19	Brown	22	42.75	−1.25	0.25	7.6	43.62	−9.75	1.37	6.2	8.50
20	Brown	19	42.87	1.62	0.75	5.6	42.75	−5.75	0.87	3.4	7.37
21	Blue	20	45.50	−1.37	0.62	8.6	45.00	−9.12	0.50	7.6	7.75
22	Green	20	41.12	0.12	0.50	8.0	41.00	−10.62	0.50	4.5	10.74
23	Green	20	43.12	−0.62	0.37	8.1	43.00	−13.12	1.12	3.0	12.50
24	Green	21	45.25	−0.37	0.75	8.7	44.62	−10.62	1.62	2.4	10.25
25	Brown	21	44.00	−4.25	0.50	8.8	44.00	−14.50	0.75	2.7	10.25
26	Brown	19	44.75	−2.75	0.25	8.0	44.00	−17.00	1.25	2.7	14.25
27	Green	19	41.75	0.00	0.00	8.7	41.50	−9.50	0.50	3.4	9.50
28	Blue	20	44.00	0.00	0.50	8.4	42.00	−14.00	1.50	2.6	14.00
29	Blue	21	45.25	0.25	0.50	8.3	45.00	−8.75	0.75	2.8	9.00
30	Green	20	42.25	−4.25	1.00	7.8	42.75	−16.50	0.25	2.9	12.25
31	Brown	21	41.00	−1.50	0.50	7.0	41.00	−12.00	0.50	2.9	10.50
32	Brown	21	46.00	−0.25	0.75	7.8	46.00	−6.00	1.00	2.7	5.75
33	Green	21	42.50	−1.00	0.50	7.4	42.25	−11.50	0.25	3.6	10.50
34	Hazel	21	43.75	−1.00	0.50	8.0	43.25	−13.75	0.75	2.3	12.75
35	Brown	21	42.25	−1.25	0.75	8.9	42.75	−8.25	0.50	2.8	7.00
36	Green	21	39.50	1.25	0.00	9.3	39.70	−10.25	0.75	3.1	11.50
37	Blue	21	45.00	−4.75	0.75	8.7	44.75	−15.50	0.75	2.3	10.75
	Mean	20.2	43.37	−0.83	0.61	8.0	43.15	−10.55	0.82	4.4	9.73
	SD	1.1	1.92	1.60	0.51	0.8	1.58	4.26	0.55	1.9	3.64
	Median	20.0	43.25	−0.62	0.50	8.1	43.25	−10.25	0.75	3.4	10.25

Abbreviations: IC, iris color; K, keratometry; SER, spherical equivalent refraction; Cyl, refractive cylinder; AA, accommodative amplitude.

Figure 2 Box plot of accommodative amplitude versus blue and dark iris color showing the medians and 25% and 75% quartiles.

Abbreviations: AA, accommodative amplitude; IC, iris color.