Digital Corneal Topography

3D Mapping of the curvature of the cornea

The cornea, which is the clear front surface of the eye, plays an important role in focusing your vision.  An eye with normal vision has a rounded cornea however a cornea that is too steep or too flat causes reduced vision.

Digital corneal topography is a three dimensional imaging process used to map the surface curvature of the cornea and is invaluable in the investigation of eye complications, fitting of contact lenses and when evaluating pre- and post-surgical patients.

The measurements are so accurate that the Optometrist is able to tailor-make contact lenses from the data but it is also invaluable in determining the best lens type and fit in contact lens consultations as the Optometrist is able to see the irregularities in the shape of the cornea in far more detail than using a slit lamp.

The topographic 3D map particularly plays a decisive role in the success of fitting Ortho-K overnight contact lenses as these lenses are tailored to the shape of the cornea. The high-quality data provides information for designing the Ortho-K lenses and provides essential data that aids in fitting, diagnostic evaluation and follow-up.

The precise data gathered from topography is also used in the diagnosis and management of keratoconus and gives insight into scarring and irregular astigmatism.