Nature’s most dazzling colors can be strangely rare. Walk through a park or forest and you see greens, yellows and reds that ...

Background Mutations in the L/M cone opsin gene array cause abnormally high perceived retinal contrast and the development of myopia. Environmental factors may also lead to high visual contrast and ...

A twist on magnetic resonance imaging that does not require gadolinium contrast appears to be as effective as standard imaging at detecting prostate cancers, according to a new study in JAMA. Experts ...

We were unable to process your request. Please try again later. If you continue to have this issue please contact [email protected]. Multifocal and single vision lenses performed similarly ...

Not revised: This Reviewed Preprint includes the authors’ original preprint (without revision), an eLife assessment, and public reviews. The current claims should be better supported by more evidence.

Some experts predict that A.I. will surpass human intelligence within the next few years. Play this puzzle to see how far the machines have to go. By Dylan Freedman and Cade Metz Produced by Juliana ...

Summary: People with schizophrenia experience impaired contrast perception, affecting their ability to differentiate light intensity and recognize shapes and textures. This deficit may stem from ...

Contrast sensitivity may be a useful tool for determining ocular disease risk. Assessing contrast sensitivity can provide clinicians with crucial information regarding a patient’s visual function and ...

At Refinery29 Australia, we’re here to help you navigate this overwhelming world of stuff. All of our picks are independently selected and curated by the editorial team, but we may earn commission or ...

ABSTRACT: Human eye can generally distinguish objects from each other or from their background, if the difference in luminance or color is large. This paper concentrates on the luminance portion and ...