BBC Science Focus Magazine

THE EXPLAINER THE EYE

It's all in the eyes

Containing more than 100 million light-sensitive cells and some of the fastest muscles in our bodies, our eyes are capable of picking up everything from starlight beaming across the galaxy to the full gamut of human emotion. But it's in their coupling with our minds through the approximately one million nerve fibres connecting each eye to our brains - that we gain the ability to synthesise slick visuals and interpret what's going on around us without getting distracted or overwhelmed.

What's inside my eye?

1. PUPIL

It looks like a black dot but it's actually a gap that lets light pass through to the back of your eye.

2. CORNEA

A transparent dome at the front of your eye, the cornea refracts light, helping to direct it along the right path to

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