Visual acuity is the medical term meaning sharpness of vision.
Visual acuity is another term for sharpness of vision. It refers to the clarity and detail with which a person is able to see objects.
The sharpness of my vision was determined by an eye doctor to be less than 20-20.
Acuity is sharpness or acuteness, particularly of a needle or of a person's vision.
Peripheral vision refers to our ability to see objects and movement outside of our direct line of sight. While it is important for driving to be able to detect objects and movement in our peripheral vision, our central vision is typically responsible for sharpness and detail. Both peripheral and central vision are important for safe driving.
there know as clarity or sharpness but difinde by the pixles or contrast
vision, understanding, smartness, sharpness, judgment, inteliigence, grasp, cleverness, brilliance, awareness, acuity
An eye examination that determines sharpness of vision, typically performed by identifying objects and/or letters on an eye chart
American Optical Corporation, introduced a new single vision lens that provided increased visual sharpness and less distortion from peripheral angles of view.
When someone is decribed as having twenty-twenty (or more correctly 20/20) vision it simply implies that they have "normal" visual acuity or "sharpness" of vision. See "Visual acuity" in Wikipedia for a full explanation of the derivation of the term.
sharpness
No, I think there is no unit for measuring sharpness.