How The Eye Sees?

The eye functions like a camera.There is a focusing part at the front that produces a sharp image on the retina at the back of the eye. The focusing part at the front of the eye consists of the cornea and the lens.

The pupil is like the aperture in a camera, regulating the amount of light entering the eye. The retina contains special cells called rods and cones that register the light and turn it into electrical impulses that are sent to the brain so that we can see.

Fine vision, such as reading, is performed by a small part in the centre of the retina called the macula.

If you are worried about your eyes or eyesight we advise that you should consult your own medical practitioner or an optician at the earliest opportunity.

Alternatively if you are in England and are feeling ill now, you can call NHS Direct on 0845 4647 for nurse advice.

NHS Direct also operate an online health information enquiry service at http://www.nhsdirect.nhs.uk/.

Please note: The NHS Direct service can only provide information about named health conditions; it cannot provide diagnoses, advice or counselling.

NHS Direct Online’s health information enquiry service is designed for use by residents in England only. If you are not resident in England, they cannot respond to your enquiry.