Barcelona 2015 Programme Registration Glaucoma Day 2015 Exhibition Virtual Exhibition Satellite Meetings Hotel Booking Star Alliance

Take a look inside the London 2014 Congress


Then register to join us
in Barcelona!

Influences on the optical system and the intraoperative wavefront analysis of the eye during cataract surgery

Search Abstracts by author or title
(results will display both Free Papers & Poster)

Session Details

Session Title: Moderated Poster Session : Cataract - Cataract Surgery Equipment/ Instruments/ Surgical Devices/ OVDs

Session Date/Time: Tuesday 08/09/2015 | 14:00-15:00

Paper Time: 14:10

Venue: Poster Village: Pod 1

First Author: : T.Tandogan GERMANY

Co Author(s): :    F. Kretz   K. Linz   G. Auffarth        

Abstract Details


To demonstrate the impact on the intraoperative wavefront analysis by different factors: Drying cornea, unfolded IOL, hypotony or consequences of anethesia


David J. Apple International Laboratory for Ocular Pathology & International Vision Correction Research Centre (IVCRC), Dept. of Ophthalmology, Univ. of Heidelberg, Germany


This study was performed with the assistance of the intraoperative aberrometer I-O-W-A (Eyesight&Vision, Germany). A multitude of influences was tested on the intraoperative measurement of refraction. These influences include the change of refraction of a drying cornea, the intraoperative pseudophakic measurement on partially unfolded IOLs and the effect of hypotony on the refractive power of the cornea. Also, we observed a dependency on the type of anaesthesia, probably due to its impact on the patients' compliance to align on the visual axis.


In total, 100 eyes are included. We found a rapid decrease in the corneal refractive power upon the drying cornea, as for the hypotonic eye. Intraoperative pseudophakic aberrometry clearly depends on the potential of an IOL to unfold quickly. A fundamental influence is the patients' capability to angle the visual axis on the aberrometer precisely, which heavily depends on the type of anaesthesia.


The intraoperative wavefront technology provides exciting new means to verify the predicted surgical outcome. We identify and illustrate fundamental prerequisites on an intraoperative measurement to deliver a trustworthy result.

Financial Interest:


Back to previous