One of the problems that we can experience with our eyes is a refractive error. People who have a refractive error in their eyes wear glasses or contacts to correct and adjust their vision. However, the person may also choose to undergo lasik eye surgery which involves using a laser to adjust the shape of the cornea so as to adjust the focus. The results of lasik eye surgery reduce the need for the person to wear glasses or contacts or even remove the need for them entirely.
The problem of a refractive error is due to the cornea and lens unable to focus any incoming light onto the person’s retina which results in the person’s vision becoming blurry depending on his distance from the object that he is viewing. However, refractive error is a broad term and can be made more specific. Today, we are going to take a look at the three main types of refractive error which can be treated through lasik eye surgery.
1.) Myopia or nearsightedness – A person who has myopia or is nearsighted has a mismatch on the power of his focus along with the length of the eye. People with this condition won’t be able to see far objects clearly requiring them to get closer to an object to focus on it more properly. Glasses for nearsighted people help enlarge the image so that they wouldn’t need to come closer to an object to see it clearly. This is the result of the focus being in front of the person’s retina instead of directly onto it. The process of lasik eye surgery helps shape the cornea to push the focus back onto the retina.
2.) Hyperopia or farsightedness – Just like myopia, people who have hyperopia or are farsighted have a mismatch with their eye’s length and the power of focusing. However, if people with myopia or nearsightedness can’t see objects far clearer, people who have hyperopia or farsightedness can’t see objects that are close to them clearly. Because of this, farsighted people need to back up and distance themselves from an object in order to focus on it properly. Through the process of lasik eye surgery, the cornea can be reshaped to adjust the focus and move it forward to hit the retina directly.
3.) Astigmatism – People who suffer from the problem of astigmatism have a distortion in the shape of the cornea or their lens. This can result in the person seeing multiple images instead of it focusing properly. Astigmatism causes the person to see things in a blur just like the two previously mentioned problems. There are many people today that suffer from astigmatism with a combination of either nearsightedness or farsightedness. Because the shape of the cornea is distorted, it will need to be reshaped to the proper form through lasik eye surgery.
So those are the three main types of refractive errors, myopia or nearsightedness, hyperopia or farsightedness, and astigmatism. All three of these can be treated through the wearing of glasses or contacts or through lasik eye surgery.