What is corneal topography?
Corneal topography creates a 3D-map of the surface of the eye (the cornea).
Why is corneal topography performed?
This test provides your Edinburgh Eye Surgeon with highly specific information about the shape of the surface of your eye.
This information is very important before cataract or refractive surgery. If the surface of your eye is irregular (eg astigmatism), then it may be shaped more like a rugby ball than a football, which affects the way light enters your eye and, ultimately, your vision.
This test is also used to diagnose and monitor certain corneal disease / disorders such as kerataconus, corneal trauma and irregular corneal astigmatism following corneal grafts. Corneal Topography can also be useful to identify astigmatism caused by other surgery, including cataract surgery.
What does corneal topography involve?
No drops are required and the test is completely painless. You simply place your chin on a shelf and press your head against a bar, looking straight ahead. You will see coloured lights, the test takes a few seconds and the results will be available immediately.
How much does corneal topography cost?
If you have health insurance, this test is normally covered as it’s considered part of your consultation – although you should check with your insurance company before starting treatment.
If used to plan surgery, this test will be included in the cost so there will be no additional charges. If corneal topography is required to diagnose and monitor conditions such as kerataconus, there will be a small charge of £50.
What do you use to perform corneal topography?
At Edinburgh Eye Surgeons, we use the gold standard in anterior eye segment tomography – the OCULUS Pentacam®.