What's inside an eyeball?
The gory secrets of sight
About this video
Looking inside your eyes
In this somewhat gruesome yet fascinating demo, Ross Exton from At-Bristol looks inside a horse eyeball to reveal the intriguing anatomy that allows us to see.
Examining the different components of the eye, Ross explains how images are focused by the cornea and lens onto the retina, which is connected to the brain via the optic nerve. The lens changes shape in order to focus images at different distances and the iris controls the amount of light entering the eye. This image is then detected by light sensitive cells, called rods and cones, on the retina at the back of the eye.
Check out the At-Bristol YouTube channel for more science demos and experiments.