Appendix A

Appendix A

Table of Approximate Equivalent Visual Acuity Notations

These notations serve as an indication of the approximate relationship between recordings of distant and near vision and point type sizes. Note A.M.A., Jaeger, and Metric are Near Vision measurements.

Distant Snellen A.M.A. Jaeger Metric % Central Visual
Efficiency for Near Point

20/20 (ft.) 14/14 (in.) 1 0.37 (M.) 100 3

20/30 14/21 2 0.50 95 5

20/40 14/28 4 0.75 90 6

20/50 14/35 6 0.87 50 8

20/60 14/42 8 1.00 40 9

20/80 14/56 10 1.50 20 12

20/100 14/70 11 1.75 15 14

20/120 14/84 12 2.00 10 18

20/200 14/140 17 3.50 2 24

12.5/200 14/224 19 6.00 1.5

8/200 14/336 20 8.00 1

5/200 14/560

3/200 14/900

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Distant Snellen	A.M.A.	Jaeger	Metric	% Central Visual Efficiency for Near	Point

20/20 (ft.)	14/14 (in.)	1	0.37 (M.)	100	3
20/30	14/21	2	0.50	95	5
20/40	14/28	4	0.75	90	6
20/50	14/35	6	0.87	50	8
20/60	14/42	8	1.00	40	9
20/80	14/56	10	1.50	20	12
20/100	14/70	11	1.75	15	14
20/120	14/84	12	2.00	10	18
20/200	14/140	17	3.50	2	24
12.5/200	14/224	19	6.00	1.5
8/200	14/336	20	8.00	1
5/200	14/560
3/200	14/900