Comparison Of Keratometer Measurements To Simulated K's As Measured By EyeSys Corneal Analysis System, Using Version 3.1 Software.

The uses of computerized video keratography (CVK) is expanding, for example in contact lens fitting, refractive surgery, keratoconus, etc. The standard way of measuring corneal curvature is by manuel keratometer measurements. The keratometer derives it's readings from a direct linear measurement taken between two pairs of points on a mire approximately 3.2 mm apart. The mires are reflected from the anterior surface of the cornea. In contrast, CVK uses a computer to analyze a series of eight concentric rings reflected off the cornea, giving 5,760 points over a nine mm diameter. This study is a comparison of the similarity between the EyeSys programs K readings to Manuel K readings.