What does LASIK eye surgery correct

To put it very briefly, LASIK eye surgery is considered to be one of the better options today to correct myopia (or nearsightedness), hyperopia (farsightedness) and astigmatism.

While the terms near and far-sightedness are pretty much self-explanatory, many of us may not be so familiar with astigmatism. If you wish to find out more about it, you can check out one of my previous posts below:

What is astigmatism of the eye


Are You a Good Candidate for Lasik Eye Surgery? – Infographic

A set of basic yet important questions was given to us by the surgeon in order to decide if our daughter was a good candidate for the Sydney laser eye surgery procedure we were looking into. The answers to these questions help surgeons decide if it is safe and feasible to perform the lasik procedure on a patient.

I recently thought of sharing this info here. Now, our daughter had attended a graphics designing course a while back and while I was working on the rough draft of this post some days ago, she happened to notice it and said hey mum, why don’t I make an infographic on this and then you post it to the blog.

Honestly speaking, I had not come across that term before and so, when she explained to me that an infographic is a (nice) way of presenting useful information with the help of graphics, I thought it was a good idea too and so, here goes:


I hope you will find this Lasik Eye Surgery infographic useful and if so, please feel free to post/share/re-blog it as you see fit.

What is astigmatism of the eye

What is astigmatism:

Astigmatism is a fairly common and in most cases, a minor condition of the eyes that typically causes distorted or blurred vision. This, in turn, leads to uncomfortable conditions and symptoms such as eye fatigue and headaches. An imperfectly shaped lens (or cornea) is the cause of astigmatism. Many of the people who use prescription eye glasses have astigmatism to some extent. This condition falls under a group of eye conditions that is recognised as refractive errors in the field of opthalmology. Refractive errors are commonly associated with conditions such as nearsightedness or myopia and farsightedness or hyperopia.

According to medical studies, most people are found to be having at least some degree of astigmatism. Treatment is normally not required for small amounts of astigmatism, as they don’t affect vision in a significant way. It is only the larger amounts of astigmatism that cause conditions and symptoms like blurred vision, eye fatigue, headaches etc. which need some form of treatment one of which is laser or LASIK eye surgery.

What causes astigmatism:

While the exact cause of astigmatism is not known, it has been generally proven to be a hereditary condition, usually present from the time of birth. With the growth of the child, the condition can change so that it either increases or decreases. Astigmatism can sometimes develop due to an eye injury or as a side effect of an eye surgery too.

How is astigmatism diagnosed:

Astigmatism is usually diagnosed with a comprehensive eye examination conducted by an optometrist. After running one or a series of test, the optometrist can determine if astigmatism is present. The findings from these tests help decide the course of action to be taken for the rectification of this condition.

The standard non-surgical method of rectifying astigmatism is by using either eye glasses or contact lenses. The most popular and standard surgical procedure for the rectification of astigmatism today is the laser eye surgery or LASIK.

What is the Laser/LASIK Eye Surgery Procedure

Laser eye surgery – also know as LASIK – is an opthalmic surgery procedure in which a type of laser known as excimer laser is used to correct various eye conditions such as nearsightedness, farsightedness, astigmatism (a condition where the eye can not focus light properly, which leads to problems like eye strain, headaches etc).

The way a LASIK eye surgery basically works is by altering the shape of the cornea which is a clear part in the front of the eyes, so that the light entering the eyes gets focused properly on the retina located at the back of the eye. With proper focusing of the light hitting the retina, the vision improves and various problems associated with the vision are eliminated.

The excimer laser used in LASIK procedure is a ‘cold’ laser meaning it does not burn tissue. The way it works is by vaporising a small portion of the tissue every time it hits. Therefore, it is considered to be a relatively safer and less invasive surgical procedure for the eyes which are, no doubt, a very important, essential and sensitive part of our the human body.

While it is commonly believed that laser/LASIK eye surgery is the only type of surgical procedure for the eyes, in reality, it is actually one of the many procedures with which the cornea can be reshaped.

I hope I was successful – at least to some extent – at explaining the basics of the laser eye surgery procedure as a common person, from the common person’s perspective.

I will conclude this introductory post now. I will try and cover more information and other commonly asked questions about laser eye surgery in the upcoming posts.