Prediction of pseudophakodonesis after uneventful cataract surgery

Session Details

Session Title: Cataract Surgery: Special Cases

Session Date/Time: Tuesday 17/09/2019 | 08:30-10:30

Paper Time: 10:18

Venue: Free Paper Forum: Podium 2

First Author: : S.Maedel AUSTRIA

Co Author(s): :    I. Baumhauer   M. Ruiss   J. Tabernero   P. Artal   O. Findl                 

Abstract Details

Purpose:

To compare dynamically assessed IOL stability of patients after uneventful cataract surgery in eyes with and without pseudoexfoliation syndrome (PXF) or history of ocular trauma.

Setting:

Vienna Institute for Research in Ocular Surgery (VIROS), A Karl Landsteiner Institute, Department of Ophthalmology, Hanusch Hospital, Vienna, Austria

Methods:

20 subjects with age-dependent cataract and PXF or ocular trauma and 20 subjects without PXF or history of blunt ocular trauma will be included. Pseudophacodonesis (wobble) will be assessed by the newest version of a dynamic purkinje meter. Measurements will be performed preoperatively, and 8 weeks after uneventful cataract surgery. Additionally, visual acuity, autorefraction, subjective refraction and optical biometry (IOLMaster 700, Carl Zeiss Meditec AG, Germany) will be performed to assess the IOL position. A self-provided questionnaire adressing symptoms such as positive and negative dysphotophsia and flickering will be used to determine symptomatic pseudophacodonesis.

Results:

This newest version of a dynamic purkinje meter records lens and IOL wobble at 50 Hz during saccadic eye movements. IOL wobbling can be observed as a quick oscillation of Purkinje images PIII and PIV (representing anterior and posterior IOL surface). The wobble effect of each IOL can be determined in terms ‚wobble amplitude’ and ‚wobble time’. These data should be used to detect subclinical zonular weakness due to ocular trauma and PXF.

Conclusions:

This Study will show, whether data from the newest version of a dynamic purkinje meter can be used to detect eyes after blunt ocular trauma oder with PXF to develop IOL stability due to zonular weakness.

Financial Disclosure:

None