Rohr Eye and Laser Center Rohr Eye and Laser Center

A Guide To Understanding Your Eyes

To understand the LASIK procedure it is crucial to understand your eyes.  How do we see?  What takes place within your eye to allow it to process images and give us the gift sight?The eye is made up of several different parts, one being the cornea.  The cornea, together with the lens refracts light rays so that they focus on the retina.  The retina is a layer of light-sensing cells that line the back part of the eye.  It is the job of the retina to take the light rays and convert them into little impulses that are sent to the brain to create images. Any light rays that don’t focus on the retina give you blurry vision and are known as refractive errors.  This refractive error is what is corrected to bring you better sight with glasses, contacts or eye surgery.When the eye has imperfections to the shape within the eyeball itself, the cornea or the lens a refractive error will occur.  The four basic refractive errors are:
  1. Myopia:  The term that is commonly used for Myopia is nearsightedness.  This means that objects in the distance may appear blurry.
  2. Hyperopia: The term that is commonly used for Hyperopia is farsightedness.  This means that objects close up may appear blurry, and in some cases distance vision may appear blurry as well.
  3. Astigmatism: Astigmatism causes the images to be blurry no matter if they are close or far away.
  4. Presbyopia: The term that is commonly used for Presbyopia is aging eye.  This usually occurs to the adult population between forty and fifty making it difficult to see things that are close.
Now that you know more about the eye and the different ailments that can affect them it is time to consider if you are a candidate for LASIK.
  • LASIK can only be performed on patients over eighteen years old.  People younger than eighteen still have changing vision.  Some ophthalmologists prefer to operate on patients over twenty one.
  • Patients that are pregnant or nursing are not candidates for LASIK. Pregnancy changes some women’s vision.
  • Confirm all medications with your eye surgeon, as some medications may not to be taken if you are considering eye surgery.
  • You must have good eye health and your eye prescription should have been stable for awhile.
  • Your personal health should be good.  If you have diabetes, lupus, rheumatoid arthritis, cataracts, retinal diseases or cornea disorders your eye doctor may recommend that you don’t have Laser eye surgery.
To better understand your vision issues as well as the risks and rewards involved in LASIK it is important that you meet with a local eye surgeon.  They will provide valuable information that can help you determine if you are a proper candidate for LASIK.