What is visual acuity?
Q: What is visual acuity?
A: Visual acuity is the measure of the clarity of vision, particularly form vision.
Q: What factors affect visual acuity?
A: The sharpness of the retinal focus in the eye, the sensitivity of the nervous elements, and the interpretative faculty of the brain all affect visual acuity.
Q: How is visual acuity measured?
A: Visual acuity is measured by identifying black symbols on a white background at a standardized distance while varying the size of the symbols.
Q: Is visual acuity the only measure of visual function?
A: No, some people may have other visual problems such as reduced contrast or inability to track fast-moving objects even if they have normal visual acuity.
Q: Why is visual acuity widely used?
A: Visual acuity is widely used because it corresponds well with everyday activities that people can handle, and it can evaluate their impairment to perform those activities.
Q: Can someone have normal vision but abnormal visual acuity?
A: No, normal visual acuity is a sign of normal vision. However, someone with normal visual acuity can still have other visual problems.
Q: What is the most common clinical measurement of visual function?
A: The most common clinical measurement of visual function is visual acuity.
