But Dodgson recognized that he needed Tenniel's sharpness of vision to illustrate his fantasy, and it was a sign of his extraordinary doggedness that he pursued a reluctant Tenniel again to illustrate "Through the Looking-Glass," until the cartoonist at last agreed to coöperate, and wearily insured his own immortality.
The accuracy of these charts depends on the size of the chart and the reader's sharpness of vision.
These changes make the reindeer's eyes between 100 and 1000 times more light-sensitive, the researchers report today in the Proceedings of the Royal Society B. Although this decreases the creature's sharpness of vision, it's a tradeoff that, on the whole, probably boosts reindeer survival by helping them better detect predators in the dark, the researchers contend.
It's like I haven't got the breadth of sharpness and vision across my visual field.
In this study, the investigators tested the visual acuity (sharpness of vision), contrast sensitivity (ability to distinguish gradations of light and dark), and color discrimination (ability to correctly identify colors) in 25 exposed and 40 unexposed members of the cohort.
There is an undeniable dreaminess to the visions, with the technicolor sharpness adds to the unreal aesthetic.
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).
Blurry vision is the loss of sharpness in the eye which affects the clarity of vision.
A visual acuity test is a done to determine the sharpness of your vision.
The classical visual sensory system is comprised of photoreceptor cells of rods (low-level light) and cones (sharpness, detail, and color vision).
Blurred vision means experiencing a lack of sharpness and fine detail when you look at something.[11].[11]
