Excessive use of contact lenses can affect your eyesight

11 Jul 2014

Laser Eye Surgery at Optilase represents the latest, most technological approach to long term vision correction.

But before the advancement of laser-based surgeries for common eyesight problems such as short sightedness or long sightedness, there were only two options – glasses or contact lenses.

Up until the early 1960s, anyone who had less than perfect eyesight had no other option but to wear glasses.

The arrival of contact lenses heralded a new era in vision correction, with “hard” lenses becoming readily available.

New age contact lenses

Further developments in the world of plastics in the 1970s saw the creation of a contact lens that wear more permeable when inserted in the eye, allowing oxygen to circulate more readily.

Hyper-permeable contact lenses that contain silicon are the most recent advancement made in the world of contact lenses.

Silicon ensures higher levels of oxygen permeability to the cornea through the contact lens so that the front of the eye remains healthy.

Contacts sit in front of the cornea

When a contact lens is place in the eye, it sits in front of the cornea, which is the transparent outer layer found at the front of the eyeball.

The cornea is unique in that it is the only part of the human body that receives its oxygen from the air outside, rather than from red blood cells.

Extensive use of contact lenses (hard/soft/daily disposables), can act as a barrier to the all-important oxygen that your cornea needs to function correctly.

Minimize risk to the cornea

Contact lenses should not be worn for longer than 8 hours, but if you wear contacts daily and tend to put them in first thing in the morning, and take them out last thing at night – you may be putting your eyesight at risk.

When the cornea is repeatedly starved of oxygen through continued use of contact lenses, it can cause corneal neovascularisation – a condition in which the body grows new blood vessels over the cornea to provide it with oxygen.

The condition can damage eyesight as well as the appearance of the eyes, which is why it is extremely important to avoid over use of contact lenses and get your eyes checked annually.

Call time on contact lenses

For anyone who avoids wearing glasses where possible and opts to wear contact lenses virtually every day, Laser Eye Surgery may be the ideal treatment option to your eyesight deficiency.

The procedure works the same as a contact lens in that it alters how incoming light is interpreted by the cornea.

While a contact lens contains refractive power to match your prescription, Laser Eye Surgery reshapes the cornea and eliminates any refractive error present.

This transforms your overall focal power to create 20/20 vision unaided by lenses.

For more information on making the switch from contacts to a lens-free life, arrange your free Laser Eye Surgery consultation at Optilase Northern Ireland on 08000 121 565.

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