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.
What are cataracts? A cataract is a build-up of protein clouding of the eye's lens which distorts or blocks light entering the eye. Cataracts can be undetectable at first, but later grow to the point of exhibiting symptoms. If left untreated, cataracts can cause visual impairment and can develop into legal blindness.