It is an information to state that any action,process or function has begun.It is the US abbreviation for the name of the Canadian Province of Ontario.It is a preposition mean â¦ ing that one object is in contact with, and usually above, another object.
Sparing the nucleus: Cortical cataracts are in a layer of the lens outside of the nucleus which is the center of the lens. They are sometimes congenital. Depending upon the density they may disturb the vision but sometimes are thin enough not to be a problem.
A cataract is an opacity or âcloudingâ of the eye lens. Cataracts impair vision by preventing light from focusing properly on the retina, resulting in poor vision or blindness. Cataracts can affect dogs of all ages. They are usually inherited, with some breeds being more susceptible than others.