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Keratoconus is an eye disease in which the cornea deforms from its normally curved dome shaped and becomes cone shaped. Sometimes there is a flaw in the collagen, the material of the cornea that weakens and allows the cornea to stretch into an irregular cone shape.

The cornea is the clear tissue located at the front of the eye and it refracts and focuses light as it enters the eye. Therefore abnormalities of the corneal surfaces can severely distort vision.

Symptoms usually start in the teen years with near-sighteness and astigmatism which can often be treated with contact lenses or glasses. At the onset it can be difficult to detect.

It is first diagnosed when the cornea starts reveal progressive irregular distortion and eventually becomes to advance for conventional glasses or contact lenses to correct. At this critical point it is often treated with specially designed contact lenses to provide a smooth optical surface to focus light rays and impede progression of the bulging cone shape.

In some case keratoconus can progress to the point that corneal replacement surgery is needed. This usually occurs around the age of 35.

There are some evidence to suggest allergy suffers and people with rigid contact lenses that rub their eyes may contribute to the progression of the symptoms and cause scratches on the surface of the cornea.

If you feel you are at risk or your prescription is changing rapidly make certain your eye care professional checks for Keratoconus during your next eye health and visual examination.

More people than ever before are consulting their eye doctors about eye strain while viewing things up close for fairly prolong periods amount of time. And it is not only adult office workers, but the young are now complaining vision problems from working on computers, using hand held devices and texting on their cell phones.

If you spend a fair amount of time looking at a digital device screen you would most likely most benefit from specially designed reading glasses or possibly computer glasses. Prescription reading glasses are designed to focus at a certain distance up close and can be prescribed for any age to help enhanced reading comfort.

On the other hand, computer glasses maybe a better choice for adults. Computer glasses provide multiple focal lengths which allow users to focus at multiple ranges within lengths arms reach. This kind of versatility can reduce computer eye strain while enhancing concentration.

Before your next eye appointment you will need to measure the distance from the bridge of your nose to the screen for all of the devices that you typically use. Take that list with you to your next eye doctor appointment.

If you are a good candidate, your eye doctor can utilize this list to prescribe personalized reading glasses or computer glasses to relieve eye strain associated with close range viewing.