COMPUTERIZED VIDEOKERATOSCOPES
                          WHAT DO THE MAPS TELL US?

“Typical or Normal Cornea”

A near spherical cornea (central 
corneal curvature or K-reading near 
spherical) will show a gradual 
increase in radius from the center 
towards the periphery.   Some 
corneas change more in the 
periphery than others.  The rate of 
change can be different in different 
meridians of the same cornea.  The 
“average” cornea has an e-value of 
about 0.4.