The Eye

Structure, how it works, correcting eye problems

The structure of the eye

  • The eye is a very complex part of your body as it allows you to see where you’re going, they allow you to read things easily and what your doing; whereas if you were not able to use your eyes (therefore making you blind), you life would be much harder and slightly less enjoyable.

  • Commonly known parts of the eye

    • Pupil

    • Retina

    • Optic Nerve

    • Iris

    • Lens

    • Cornea

Cow's Eye Dissection I Exploratorium

How the eye works

  • Light travels through into the eye through the cornea and the image is received upside down, and as the brain receives the image, it is flipped so you see the image the right way up. The iris works like a camera shutter, enlarging and minimising the image based on the amounts of light entering the eye.

    • Examples of this happening

      • The way a pinhole camera works or most other cameras

      • A cow’s eye

      • A human eye

      • Any other eye

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Bill Nye The Science Guy on The Eyeball (Full Clip)

Correcting eye problems

The normal way of correcting eye problems would be to use contact lenses or glasses, though until contact lenses were made popular to use during the 1950's, glasses, for at least the past seven - centuries had been the only practical way to fix vision problems.

In recent years operation techniques, the tools, and the procedures for correcting eye problems have been evolving at an extremely quick rate. One of the ways of knowing if you require glasses or contact lenses is taking an eye test (image of the machine used for the test below "Wavefront technology used for measuring vision errors in custom LASIK helps achieve very precise outcomes.").

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Correcting eye problems