Comparison of axial and instantaneous videokeratographic ... | 合法醫療器材資訊網

由LBSzczotka著作·1998·被引用44次—Axialandinstantaneousmapsdiffersignificantlyinapicalpositionandapexcurvatureinkeratoconus.Althoughinstantaneousradiusmaybetterrepresent ...

Purpose: Instantaneous radius of curvature data in corneal videokeratoscopy better represents corneal shape and local curvature changes in keratoconus than axial maps, especially in the periphery. Knowledge of instantaneous radius is especially important in keratoconus for analysis of the cone apex, which is often decentered. In this study, we quantitatively compared axial and instantaneous displays of videokeratographic data in keratoconus, with emphasis on apex curvature and position. We assessed the utility of instantaneous data for rigid gas permeable (RGP) contact lens curvature selection and compared it with data derived from the original axial displays in keratoconus.

Methods: We performed modern placido-based videokeratography on 35 eyes with clinically diagnosed keratoconus. ...