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To Donders belongs the merit of having pointed out the presence of hypermetropia in about two thirds of all cases of convergent strabismus.

Long-sight, or hypermetropia, signifies that the eyeball is too short or the lens too flat.

There is a high degree of hypermetropia in each eye, the R. has nearly 6.0 D and the L. about 5.0 D. With correction he gets practically full direct vision with each.

They also examined other animals, and the same proportion of hypermetropia existed.

I know it is the custom with a great many if not the majority of opticians to fit a customer without knowing whether he has presbyopia, hypermetropia, or any of the other errors of refraction.