From: Zetsu - 21 Apr, 20:28
[...The Variability of the Refraction of the Eye
The theory that errors of refraction are due to permanent deformations
of the eyeball leads naturally to the conclusion, not only that errors
of refraction are permanent states, but that normal refraction is also
a continuous condition. As this theory is almost universally accepted
as a fact, therefore,...
47 Posts. Last post send by: Zetsu - Monday 21 Apr