Digital Topography

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Digital corneal topography is a process for precisely mapping the surface curvature of the cornea (the front surface of the eye), similar to making a contour map of land.

The cornea is a clear membrane that covers the front of the eye and is responsible for about 70 percent of the eye’s focusing power. The shape and clarity of the cornea largely determines the visual ability of an otherwise healthy eye. A perfect eye has an evenly rounded cornea, but if the cornea is too flat, too steep, unevenly curved, or irregularly surfaced less than perfect vision results.

The purpose of corneal topography is to produce a detailed description of the shape and power of the cornea. Using computerized imaging wavefront analysis technology, the 3-dimensional contour map produced by the corneal topographer aids in the diagnosis, monitoring, and treatment of various visual conditions.

Corneal topography is not a routine test. It is this technology which allows the fitting of advanced contact lens designs, including Orthokeratology. It is also excellent in detecting and monitoring the health status of the cornea for conditions such as:

    1. UV damage
    1. Keratoconus – a degenerative condition that causes a thinning of the cornea
    1. Corneal scars or opacities
    1. Corneal deformities
    1. Irregular astigmatism