As we age, our bodies go through many changes. While grey hair and wrinkles are the most visible signs, our eye colour can ...

Human eyes are actually spheres. The part that we can see is only just the front. That coloured circle is called the iris and the black spot in the middle is the pupil. This is the part of the eye ...

The pupil, the dark center of the eye, determines how much light reaches the light-sensing retina at the back of the eye. Muscles in the iris (the colored part of the eye) can tighten around the ...

The uvea is made up of a layer of blood vessels, a muscular ring that surrounds your pupil, and the iris, the colored part of your eye. Together, they help your eyes focus so you can clearly see ...

One of the biggest challenges with eye cancer is that its symptoms can be subtle or even invisible at first. Regular eye ...

Pupil size is controlled by the brain, which receives signals from each retina and sends a message for your eyes to adjust to the light. Muscles in the colored part of your eye, your iris ...