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 a clouding of the normally transparent lens within your eye. The lens is located directly behind the pupil and normally assists in focusing light for clear vision. As the cataract worsens, it prevents light from coming through your pupil and focusing clearly on the retina.