Intraoperative Skiaskopie zur Bestimmung des Brechwerts einer zu implantierenden Intraokularlinse

Abstract

In cases of difficult or inaccurate preoperative ultrasound biometry IOL power can be estimated after intraoperative retinoscopy in the aphacic highly myopic eye. IOL power can be calculated instantly using computer programs or tables. This method additionally enables the surgeon to control the refractive result of intraocular lens implantation prior to wound closure. However this method lacks reliability in higher hyperopic eyes, as in these cases small changes in corneal vertex distance of the lens used for retinoscopy highly alter the result.

Accuracy of intraoperative retinoscopy in corneal power and axial length estimation using a high plus soft contact lens

“…Happe et al. (1997) found retinoscopy alone lacking reliability in high hyperopia, which was attributed correctly to small changes in corneal vertex distance of the trial lens.…”

“…, 2002). In these cases various approaches have been used to reduce miscalculations, including clinical refractive history, videokeratography and intraoperative retinoscopy (Happe et al. , 1997).…”