How the Eye Works
Light allows us to see the world around us by the light reflected.
The eye is a beautiful optical instrument with many discrete parts that function together to give us the wonder of sight.
Cornea - A clear structure at the front of the eye that acts as a window to let light in and bend it to allow us to see.
If the curvature is not perfect then the quality of vision will degrade.
Laser eye surgery addresses this issue by re-shaping the cornea.
Lasek removes a minuscule amount from the front of the cornea to correct the shape and restore vision back to normal
Lasik is different. The surgeon makes and lifts a small flap on the front of the cornea. The laser then re-shapes the exposed layer and the flap is closed.
Where appropriate Lasik is a more effective technique and the majority of laser eye surgery is based on Lasik.
Pupil - The central opening in the iris which regulates the amount of light entering the eye
Iris – The coloured part of the eye allows that controls the pupil size.
Lens – A clear flexible organ that is contained in the lens capsule. Specialized muscles change the shape of the lens to focus light entering the eye on to the retina.
Retina - The light sensitive layer at the back of the eye that converts light to signals sent via the optic nerve to the brain for processing into a visual effect.
Macula – The very specialized central part of the retina that generates our detailed central vision
Optic Disc – The point at which the optic nerve joins the retina. There are no light sensitive cells at this point which creates the natural “blind spot” in our vision.


