Saturday, February 3, 2007

.2). Rays Of Light From The Removed Objects Almost

.2). Rays of light from the removed objects almost that Are precisely focused on a retina (??.???.2?.) " Almost that " - , that at a far-sightedness, according to laws of optics, Rays of light neither from removed, nor from nearby objects not Are reduced precisely in focus on a retina. Simply for removed - this focus is more close to a retina. Thus, At a far-sightedness the person never sees afar as - , as well as the person with normal sight. Therefore the name This kind of infringement of sight - "far-sightedness" - not absolutely Precisely reflects its(his) character. With approach of age of 40-50 years at many people - a so-called senile far-sightedness (..2). Thus the eye can have the normal spherical form, but Crystalline lens a little . It is caused different - Us - condensation of fabrics of a crystalline lens, easing Muscles, etc. Because of a crystalline lens older persons, as well as Far-sighted, cannot precisely see nearby objects. Origin , according to(agree) classical To representations about work of an eye, speaks dissymetric - a crystalline lens (because of a non-uniform pressure(voltage) Muscles), or infringement of sphericity of a cornea.

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