But they are very sensitive to light and allow us to see at night. When the cones have all the various pigments -- called photopigments -- your eye sees all possible colors. If there’s a problem ...

Researchers have developed experimental contact lenses that use nanoparticles to convert the invisible wavelengths of ...

Human eyes contain two types of photoreceptors ... Even though we can't see color well at night, our visual system lets us take in information over an enormous range of light intensities, from ...

Dry eyes at night may be caused by too much screen time, taking certain medications, and some health conditions, among others. Treatments may include natural remedies or medications. Nighttime dry ...

The 'super-vision' lenses have been created by scientists in China and could also help color blind people see in color again.

Scientists in California claim to have discovered a new jaw-dropping color no human has ever seen before. The catch? You have to zap your eyes with laser pulses to see it. Five scientists at the ...

Rodents consistently chose the darker space, indicating an ability to perceive the infrared illumination. Pupil contraction ...