Proposed classification for topographic patterns seen after ... | 合法醫療器材資訊網

由CHKarabatsas著作·1999·被引用51次—Threehundredandsixtycornealtopographicmapsfrom95eyes(88patients)...(2b)Regularasymmetricbowtiepattern:aregularastigmaticpatternwas ...

Computer assisted videokeratography (CAVK) provides theoretical advantages over keratometry and photokeratoscopy in the assessment of the corneal topography. It has been used to document and classify the topography of normal corneas,1-3[1] as well as corneal surfaces following radial keratotomy4 or excimer laser treatment.5 6 The previously reported classifications are, however, inadequate for the great heterogeneity of topographic patterns with irregular astigmatism seen after penetrating keratoplasty (PKP). The large variability of these corneas presents a challenge in classification.

The present study has the following objectives: (a) to develop a useful classification scheme of the topographic patterns seen after penetrating keratoplasty, (b) to correlate topographic patterns with keratometric and refractive data, (c) to understand relations if any, between different astigmatic top...