EigenAnalysis

Learn how your eye works

To help you to see clearly, light rays have to be completely concentrated on the retinal layer at the back of the eye. The beams of light that emerge from an image break through the clear cornea (covering of the eye) and then are distorted as the travel through the eye’s innermost lens, that maneuvers the fine tuning of the focusing.

The viewable image is forged by the light sensitive retina switching the light energy in to electical nervous impulses, which then pass along nerves to the region at the back of the brain that processes vision. This occipital part of the cerebral cortex tells us what we are seeing

Short-sightedness (myopia)

With short sighted or myopic people, the eye socket is too long, relative to the focusing strength of the cornea and lens unit. And So the rays of light that come from the distant object converge in front of the retina as the corneal/lens focussing unit is too powerful.

This means that achieving a clear image of an object in the distance becomes increasingly challenging. Focussing on objects near by is OK. So children mightn’t learn as well as they can’t read what is written on the white board very easily.

In general, children and teenagers are the most commonly affected group of patients. You may find that the whole family have to wear glasses as there is a genetic tendency. However, these parents are usually well aware of the tell tale signs and Thus tend to bring their children to the care of opticians relatively quickly.

Spectacles are needed to set right the focussing by creating another element to the cornea/lens unit, which distorts the visual image to allow it to focus on the retina more readily. It can be quite expensive to buy spectacles all the time. However, it is possible to buy your online spectacles now. Myopia can also be handled by wearing contact lenses or even undergoing laser surgery to correct the anomalous visual unit