Detecting the defect in your eye can also be shown as the first stage of treatment. Regardless of the patient’s complaint, the patient should be examined in detail and appropriate tests should be performed. Corneal topography is one of these tests. What is this test that especially keratoconus patients are used to hearing frequently? Why is it requested? Let’s examine the details.
What is Corneal Topography?
Let’s start with a brief mention of the cornea. The cornea is a clear layer located at the very outside of the eye. The main task of this layer, which has a certain curvature, is to refract the light coming into your eye. In this way, the light is focused correctly on the retina and vision is achieved.
Corneal topography is a special test that maps the cornea with color codes. Based on the word topography, you can liken your cornea to a piece of land. Just like land, your cornea can have smooth sections, ridges or similar shape changes.
Corneal topography allows the cornea to be mapped, providing important information such as the thickness of the cornea, the height of the cornea, and the condition of the surface.
How is Corneal Topography Performed?
A short period of time is enough for mapping to be done. In a way, this can be thought of as taking a photo of your eye. No pain is felt. Let’s talk about the procedure.
- The device that performs the mapping has a structure resembling a large bowl.
- For imaging, you place your forehead and chin on the designated points on this device.
- You look at a fixed image (point) inside the device.
- Meanwhile, the device takes an image of your eye and mapping is done.
- You do not feel any pain during the mapping. The procedure is also completed in a very short time.
Why is Corneal Topography Ordered?
We have already mentioned what it is, but let us give a little more detailed information about why the test is ordered. The reason for monitoring the test may vary. Let’s evaluate under a few main headings.
- Previous operation: This test may be requested to evaluate the results of the surgery after the operation.
- Detection of Corneal Diseases: It is used to determine the condition of the eye in various corneal disorders.
- Suitability for Laser Treatment: In cases of laser treatment to be preferred in eliminating common eye problems such as refractive errors.
- Compatibility for Contact Lens: If you are going to wear contact lenses, you need contact lenses that will be prepared according to you. The most suitable contact lens for you can be determined with topography.
Keep in mind that all measurements should be made on approved devices and by specialist doctors. It should also be noted that a specialist doctor should be consulted in the evaluation of the results.
