When evolution skeptics want to attack Darwin's theory, they often point to the human eye. How could something so complex, they argue, have developed through random mutations and natural selection ...

The intricacy and seeming perfection of the eye, both as an object of anatomical beauty and as a working machine, have worried and intrigued scientists, philosophers and zealots, especially during ...

The human eye is reasonably fast, adept at detecting contrast, and surpassed in resolution only by birds of prey—a good all-around eye for the most versatile animal of all. Far from being an ...

Where are the fastest and most active muscles in the human body ... the pupil, and the sclera, are all working together to allow us to see. The eye muscles have to be fast. Just to track an ...

Standard contact lenses cover the eye’s cornea. However, gas-permeable scleral lenses are specially made to sit on the sclera, which is the whites of the eyes. Because of the size of scleral ...

The term "hunter eyes" describes eye shapes with a positive canthal tilt, hooded eyelids, an almond shape, and minimal or no visible sclera (the white part of the eye). Prey eyes have a negative ...

In this video, learn about different parts of the human eye and how our sight works. Follow me please class. We’re here at the optician’s to get a good look at a human eye and find out how it ...

They are far more sensitive to light than cone cells, which is why you can sometimes see stars out of the corner of your eye at night, but when you look straight at them they seem to disappear. 5.