What Does Having a Misshapen Cornea Mean?

04 Jan 2014

If you rely on glasses or contact lenses in order to see objects either far away or up close, then you are described as having a refractive error.


A refractive error occurs when light that enters the eye falls in front of or behind the retina rather than on it creating blurred vision.


Most of the eye’s refractive power is located in the cornea, which is a transparent, dome-shaped layer located towards the front of the eye.


In a normal eye with perfect 20/20 vision, the cornea is a perfect spherical shape, but a refractive error indicates a misshapen cornea.

What type of refractive error do I have?

Myopia: In myopic eyes either the eye itself is too long or else the cornea is too steep which cause rays of light to fall short when they reach the back of your eye. Objects up close are perfectly clear but anything in the distance appears blurred, hence the term shortsightedness.


Hyperopia: In the case of hyperopic eyes or long-sightedness, the eye can be too short or else the cornea is too flat which contribute to light being focused beyond the retina. With hyperopia, far away objects are not an issue, but you have difficulty making out near objects.


Astigmatism: If your cornea isn’t spherical and is instead oval, then you have astigmatism, which usually manifests during childhood. Light cannot bend correctly and contribute to blurred vision. Sometimes astigmatism presents itself along with either myopia or hyperopia.

How does Laser Eye Surgery reshape my cornea?

Laser Eye Surgery removes microscopic amounts of corneal tissue to either reduce or increase the gradient of you cornea so that light bend correctly and focus clear images onto the retina.


Because the exact amount of excess corneal tissue is removed, vision is immediately corrected and you can resume to your normal routine, usually after 24hours.


To find out more about your refractive error and to book your free consultation, call +353 1 223 8821.

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May 22, 2023

Absolutely amazing from the consultation with Aisling in at Athlone to everyone in Ely Place and my surgeon Tom!! Delighted to have my 20/20 free and to be glasses and contacts free!!! Thank you all so much again!!!

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May 19, 2023

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May 18, 2023

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May 18, 2023

Very happy so far, was a thoroughly professional experience from the consultation to the surgery to post op checks. Was slightly delayed on day of surgery but all worth it in the end. Would definitely recommend to anyone choosing to go down the laser eye surgery route.

Joseph Walshe
May 17, 2023

I had laser eye surgery one week ago. It was by far the best decision I’ve ever made. I was extremely nervous about getting the procedure done, so I did get a second opinion on it. The service optilase offers was by far superior than anything else offered by other places. They were always happy to answer questions, and even got my optometrist, Michaela, to call me back to answer questions I had. On the day of surgery, I was in and out within an hour - super quick and efficient. The surgeon was very reassuring as were the whole team. By that evening there was a noticeable improvement in my vision, and by the next morning I had better than 20/20 vision. The precision of my vision now is indescribable: everything is so much clearer and life is just better! By far the best decision I’ve ever made. Thank you Michaela & Team Optilase for all of your help. I would highly recommend to anyone.

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April 13, 2023

The staff were so friendly and helpful and made the whole process very easy. I got emails and phonecalls with all the information I needed and more from when I booked my first consultation until after the surgery. I had LASIK, which was quick and comfortable. My surgeon was kind and thorough and he took the time to chat before and after the procedure. It was all just generally easier and more pleasant than I expected and I’m so glad to have had LASIK here

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March 28, 2023

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March 28, 2023

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February 14, 2023

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