Causes Of Short Sight

Causes of Short Sight.

Short sight is more common in town than among country folk, for the simple reason that townspeople have less need for long sight, they have fewer opportunities for exercising their sight on distant objects and their occupations do not favor its development by training or selection, but it is not, in the majority of cases, a proof of physical degeneracy, as can be seen in the case of the Germans, who are a notoriously short-sighted people.