A first study of the inheritance of vision and of the relative influence of heredity and environment on sight / by Amy Barrington and Karl Pearson.

Barrington, Amy.

Date:: 1909

Credit: A first study of the inheritance of vision and of the relative influence of heredity and environment on sight / by Amy Barrington and Karl Pearson. Source: Wellcome Collection.

Provider: This material has been provided by King’s College London. The original may be consulted at King’s College London.

33/74 (page 27)

$Table XXI his. Refraction Class and Age. Edinburgh Girls. Refraction Class Age 5—7 7—9 9—11 11—13 13—15 Totals 16 45 72 47 23 203 Hyperinetropia 28 40 49 19 12 148 Hypermetropic Astigmatism 41 34 27 27 8 137 16 9 4 9 3 41 Myopic Astigmatism and Myopia ... 1 8 9 17 2 37 Totals 102 136 161 119 48 566 Tables XXII and XXIII. Refraction Class and Age. Glasgow. Boys Girls Eefraction Class Age Age 6-9 9—12 12—15 Totals 6—9 9—12 12—15 Totals Emmetropia 33 60 29 122 52 70 27 149 8 22 25 55 3 15 16 34 Hypermetropic Astigmatism 3 11 9 23 2 8 10 20 3 5 8 7 5 12 Myopic Astigmatism and Myopia ... 2 3 7 12 6 1 6 13 Totals 46 99 75 220 63 101 64 228 4—2$