Corneal mapping gives an eye care professional the details of the curvature of the cornea, much like a topographical map shows the mountains and valleys of an area on earth. This is called corneal topography, photokeratoscopy or videokeratography. Creating the map of the eye’s surface uses a computerized technique which is completely non-invasive.
The eye’s cornea and lens work together to refract – or bend – the light entering the eye, so that a sharp image strikes the retina at the back of the eye correctly. So, knowing the cornea’s curvature plays an important role in diagnosing and correcting refractive errors.
With corneal topography, that 3D map is used by optometrists and ophthalmologists for planning refractive surgery, conducting LASIK and prescribing certain types of contact lenses. It can also be used during the follow-up stage to assess the degree of success after surgery or to see how well the contact lenses fit.
At our optometric Practice, corneal topography is a quick procedure which doesn’t hurt a bit. It is actually an offshoot of another mapping technique called keratoscopy. Corneal topography is an extension of the measurement from 4 points separated by a few millimeters to the development of a complex grid encompassing thousands of points, which maps out a wider portion of the cornea.
Special mention goes to the EyeGlass Guide for providing the facts sited in this article. Visit the EyeGlass Guide today!