versão impressa ISSN 0004-2749versão On-line ISSN 1678-2925
Arq. Bras. Oftalmol. vol.62 no.1 São Paulo fev. 1999
To compare the results obtained by the "Corneal Analysis System EyeSys'', a videoke ratoscopy based on the p rincipie of Plácido 's disk, and with those by the "Corneal Topography System PAR", a videokeratoscopy based on the principie of rasterestereography, in view of the analysis of eyes with keratoconus.
Prospective and comparative study of the videoke ratographic maps of 55 eyes with keratoconus of 32 patients obta ined by CAS Eye-Sys and by CTS PAR.
The CTS-PAR method measured larger areas of the cornea, a larger number of cases, located more superiorly the apexes and supplied slightly smaller curvatures than the CAS-EyeSys. On the other hand, the two methods did not dijfer regarding measures of the direction o.f ustigmatism and the keratometric dijfe rence.
The v ideokeratographyc methods based on Plácido's disk ( CAS EyeSys) and on rasteresterecgraphy (CTS PAR) presented severa[ discrepam results in the analysis of eyes with keratoconus.
Keywords: Keratoconus; Placido disc; Rasterestereography