In the case of the common and well–studied blue tit bird, the male and female appear visually identical to the human eye.

Researchers at University College Dublin (UCD) have discovered that a mutation in a gene called emc1 causes major vision ...

An FDA optometry roundup discusses changes in drug approvals and devices used by optometric eye care professionals.

subtle eye movements, and the unique arrangement of photoreceptor cells in the human eye. Published in the journal eLife, the research provides new insights into how our visual system achieves ...

The human eye is a simple, but extremely robust, optical instrument. Analysis by sophisticated wavefront-sensing technology and customized ray-tracing has now revealed that the eye is actually an ...

Dogs only have two color-sensing cones in their eyes, giving them "dichromatic vision." The retina uses "cones," a specific ...

Among five of a bird's senses, sight is arguably the most important. With around 10,000 individual bird species in the world, ...

The team calculates that a single cone photoreceptor in the human eye can transmit information at around 270 bits/sec, which comes out to a staggering 1.6 billion bits/sec per eye. The optic nerve ...

The retina uses "cones," a specific type of photoreceptor, to differentiate color, according to the American Academy of Ophthalmology. Human eyes have three types of cones: red-sensing ...

The lights appear within what is known as an aurora oval, a belt that roughly rings the Earth’s geomagnetic poles, said ...