What term describes the clarity or sharpness of vision?

The correct answer, visual acuity, refers to the clarity or sharpness of vision. It is a measure of how well a person can see details at a specified distance, commonly assessed through visual tests that determine the smallest letters or symbols an individual can read on an eye chart. High visual acuity indicates clear vision, while low visual acuity can signify issues such as refractive errors, which can affect one’s ability to see things clearly.

Accommodation refers to the eye's ability to change its focus from distant to near objects. It is a different aspect of visual function rather than sharpness or clarity itself. Achromatopsia is a condition characterized by a lack of color vision, impacting the ability to perceive colors, but it does not specifically relate to visual clarity. Cataracts involve clouding of the lens of the eye, leading to blurred vision and affecting overall visual clarity but are not a measure of visual sharpness on their own. Thus, visual acuity is the precise term that encapsulates the concept of clarity or sharpness of vision.