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Question. is...

DEFINE EYE AND ITS PARTS.LABELLED IN THE DIAGRAM !!​

Answer 1

The eye has many partsthat must work together to produce clear vision: ... The cornea, a clear window at the front of theeye, covers the iris and the pupil. A clear lens, located behind the pupil, acts like a camera lens by focusing light onto the retina at the back of theeye.



Aqueous humour – maintains the pressure in your eye and nourishes the cornea and the lens by supplying amino acids and glucose, as well as vitamin C.

Ciliary muscles – a circular muscle that relaxes or tightens to enable the lens to change shape for focusing.

Cornea – a clear covering on the front of your eye that focuses light entering the eye.

Iris – the coloured part of your eye that regulates the amount of light entering.

Lens – the clear part of the eye behind the iris that helps to focus light, or an image, onto the retina

Optic nerve – a bundle of more than one million nerve fibres that carries visual messages from the retina to the brain


Pupil – this is the opening in the centre of the iris that lets in light. It is regulated by the iris.

Retina – the light-sensitive tissue lining at the back of your eye that converts light into electrical impulses that are sent along the optical nerve to the brain.


Vitreous humour – a clear gel that fills the inside of the eye and helps it to retain its shape.