Millions of people around the world suffer from a form of eye complications. The most common complications have something to do with the eye’s refractive properties resulting in hyperopia or farsightedness, myopia or shortsightedness, and astigmatism. People who suffer from eye problems can have their daily activities affected. Fortunately, people can get prescription glasses or contacts in order to correct their vision and be able to see a lot clearer. For those who are seeking something more “long term” Lasik Surgery would be a viable option.
But what is lasik eye surgery? Well lasik eye surgery is a form of laser eye surgery which involves reshaping a person’s keratomileusis or cornea (which is the root cause of refractive eye problems) in order to correct vision. In order to get to the cornea the eye surgeon has to work under the situ or under the person’s corneal flap. The surgical process gets the term “lasik” as a shortened version of the phrase “laser in situ keratomileusis”. Eye surgeons make use of excimer lasers which have been specifically designed to treat refractive errors to correct vision removing the need for any corrective lenses.
Excimer lasers have proven to be very helpful in the surgical industry but many years before the process of lasik surgery was actually developed, excimer lasers already had other uses and purposes. Lasik eye surgery was developed by a person named Ioannis Pallikaris in Greece way back in 1991 with excimer lasers.
So how does the process of Lasik Surgery actually work? Well before the eye surgeon can actually make use of the excimer laser he first has to create a thin corneal flap hinge. This can only be done with the use of precision tools specifically a microkeratome. One the eye surgeon makes the precision cut to create the corneal hinge it is then pulled back allowing the corneal tissue underneath to be exposed.
When the eye surgeon has access to the corneal tissue, the excimer laser is then used to be able to alter the shape of the cornea. This process of reshaping the patient’s cornea is known as ablation. The pattern of ablation that the surgeon will follow depends on how severe the patient’s eye problem is. Once the eye surgeon finishes the ablation process, he then pulls the corneal flap back into position.
We have mentioned that lasik surgery helps treat refractive errors in the eyes? But what is a refractive error actually? To understand, let’s take a look at how our eyes actually work. Our clear vision is that result of the cornea and the lens focusing the light we see to hit our retinas just like how a camera directs light onto film. If there is an error in the focus of light this will result in blurry vision depending on the distance of the object the person is observing.
Short corneas focus the light in front of the retina while long corneas do the opposite resulting in blurry vision. Lasik Surgery helps shape the cornea to the right length so that light hits the retina at the right spot.