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.
adj., adj cataracÂ´tous. Causes and Symptoms. Some cataracts result from injuries to the eye, exposure to great heat or radiation, or inherited factors. The great majority, however, are âsenileâ cataracts, which are apparently a part of the aging process of the human body. Blurred and dimmed vision are often the first symptoms.