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Corneal Topography

What is Corneal Topography?

Corneal Topography also called as video-keratography or photo-keratoscopy is a method for obtaining three dimensional mapping of the surface of your cornea (the clear front surface of your eye)like creating a contour map of land.

How is Corneal Topography done?

Corneal Topography is a non-invasive method of investigation meaning that it does not require your eye surface to be penetrated. There is no pain and it does not take very long either.

You will be asked to sit in front of a lighted bowl which has a pattern of concentric rings.

The pattern is focused on your eye’s front surface and is reflected back to a camera in the middle of the bowl. These rings of light that are reflected back, are analysed by a computer which then generates a map of the shape of your cornea.

Why is Corneal Topography done?


Corneal Topography is useful in the diagnosis, monitoring and managing various conditions in which corneal curvature is affected like:

• Keratoconus, a condition in which there is thinning and bulging of your cornea.
• Corneal Transplantation
• Corneal Scarring
• Deformities of the cornea
• For the fitting of contact lenses
• While planning for refractive surgeries
• For astigmatism after other eye surgery