Contour resolution of the EyeSys Corneal Analysis System.
We investigated the accuracy of a conventional videokeratography instrument (Corneal Analysis System, EyeSys Laboratories) to measure contour information using specialized software developed by the manufacturer. Seven calibrated spheres were measured and the results tabulated. A contour resolution for all spheres for all reflected rings was found to be +/- 0.0047 mm, representing a 95% confidence interval. This level of resolution is high enough to obtain clinical value from using the EyeSys instrument as a contour measuring device.
Department of Ophthalmology, Massachusetts Eye & Ear Infirmary, Harvard Medical School, Boston 02114, USA.
J A
JA
Young
J H
JH
Talamo
I M
IM
Siegel
D003315:Cornea / Q000033:anatomy & histology*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation*; D008953:Models, Anatomic; D015203:Reproducibility of Results; D012984:Software