Save. While an ophthalmologist and an optometrist both work in the eye health care field, there are distinct differences between the two professions. An ophthalmologist who specializes in a variety of eye disorders and conditions, while an optometrist generally checks eyes for the prescription of corrective lenses.
n something that bulges out or is protuberant or projects from its surroundings. âthe bony excrescence between its hornsâ. either prominence of the frontal bone above each orbit. prominence on the outer surface of the occipital bone. a part that bulges deeply.
Excretion is defined as the process of expelling waste matter, or the waste matter expelled by this process. 1  When a person goes to the bathroom to urinate, this is an example of excretion. 2  Urine is an example ofexcretion. 3  the act or process of excreting.  waste matter excreted; sweat, urine, etc.