Why, you know, I said, that the eyes, when a person directs them towards objects on which the light of day is no longer shining, but the moon and stars only, see dimly, and are nearly blind; they seem to have no clearness of vision in them?
All had a clearness of vision, all were ready to work and change.
One of his better-known sayings is that "the (printed) letter killeth, and it is extraordinary how it will prevent the acutest from exercising their wonted clearness of vision" (SI, 872)—see also Collingwood (2013, 19 20).
In addition, we will investigate visual acuity (clearness of vision, spatial resolution of the visual processing system) using the non-invasive adapted Snellen charts (Medical Workshop, Groningen, The Netherlands), with and without visual aids.
Visual acuity refers to acuteness or clearness of vision, which is dependent on the sharpness of the retinal focus within the eye and the sensitivity of the interpretative faculty of the brain (18).
VA is the acuteness or clearness of vision, typically checked at a distance of 20 feet (6.1 m).
