Laser Eye Surgery Terminology

01 Nov 2013

When it comes to researching the ins-and-outs of Laser Eye Surgery, a lot of scientific words can be thrown about that are often never explained.


So rather than having to search the meaning of each one, here’s a quick list of the most common language used so you can get up to speed when it comes to Laser Eye Surgery.


Aberration: A vision defect caused by a flaw in the structure of the cornea. There are two types of aberrations – higher and lower.


Ablation: The process in which cells are removed from the surface of the cornea by laser energy.


Astigmatism: When the cornea is an irregular shape – oval instead of spherical – it causes vision to appear blurry. Often astigmatism presents itself along with myopia or hyperopia.


Cornea: Transparent dome shaped layer at the front of the eye that has microscopic amounts of tissue removed from it during Laser Eye Surgery.


Excimer Laser: Extremely precise laser used to reshape the cornea. It uses a cool beam of light so surrounding eye tissue is unaffected by Laser Eye Surgery.


Femtosecond Laser: Creates the corneal flap needed for Laser Eye Surgery.


Hyperopia: Long or farsightedness that causes objects up close to appear out of focus.


IntraLase: Using bladeless technology, IntraLase represents the latest advances in Laser Eye Surgery.


LASIK: Laser Assisted in Situ Keratomileusis – the most common Laser Eye Surgery procedure. It requires the creation of a corneal flap in order to expose the part of the cornea that receives corrective treatment.


Myopia: Short or nearsightedness causes objects in the distance to appear blurry.


Presbyopia: When the eye is unable to focus clearly on near objects because of the ageing process. The condition is commonly associated with the need for reading glasses.


PRK: Photorefractive Keratectomy is a type of Laser Eye Surgery that sees the outer layer of the cornea removed by an alcohol solution instead of creating a corneal flap. Recovery time is longer than LASIK or other procedures.


Refraction: The process that takes place in the eye whereby light rays are bent so that they focus directly on the back of the eye.


Refractive Surgery: Another term for Laser Eye Surgery.


Refractive Error: If you suffer from myopia, hyperopia or astigmatism you are deemed to have a refractive error – light that enters the eye isn’t refracted correctly.


Topography: The process in which a map of the cornea’s surface is created, illustrating it’s curve and any aberrations.


WaveFront: A customized Laser Eye Surgery procedure that corrects the exact errors on your cornea.


To find out more about Laser Eye Surgery, book your free consultation on +353 1 223 8821.


More to Explore

How the Presbia Corneal Inlay from Optilase Works

06 Oct 2013
Read more

1-in-5 Irish adults over the age of 45 believe they’re past the point of “Sexy”

05 May 2015
Read more

What is Hyperopia or Long-Sightedness?

22 Jun 2012
Read more

Here's why working from home might be giving you eye strain - and what you can do about it

23 Sep 2020
Read more

Book a Free Consultation Today!

At your consultation we will answer all your questions, discuss finance options, and assess whether you are a suitable candidate for one of our life-changing, treatments. Consultations with our expert Optometrists are free and take approximately 1 hour at one of our nationwide clinics.
World’s Leading Technology
Laser Eye Surgery Lifetime Care Guarantee
Laser Health Insurance Discount
World-Renowned Surgeons
20% Tax Relief
0% Interest Free Finance
99% Of Our Patients Recommend Us

Lets Connect

Privacy CentrePolicy & Procedures
Flexible Payment with
Book a Free Consultation