Dynamic assessment and prediction of pseudophakodonesis after uneventful cataract surgery

Session Details

Session Title: Paediatric Ophthalmology & Other Topics

Session Date/Time: Tuesday 25/09/2018 | 08:00-10:30

Paper Time: 09:24

Venue: Room A3, Podium 2

First Author: : S.Maedel AUSTRIA

Co Author(s): :    I. Baumhauer   N. Hirnschall   O. Findl              

Abstract Details

Purpose:

Decentration, tilt and pseudophacodonesis (wobble) - dangling of the IOL with eye movement - may decrease visual acuity and contrast sensitivity and induce glare and subjective perception of image flickering in pseudophakic patients. Patients with pseudoexfoliation syndrome (PXF) or history of blunt ocular trauma, have a higher incidence of decentration and IOL subluxation due to higher risk for zonular weakness. A novel, dynamic purkinje meter can be used to measure IOL wobble objectively in these eyes. Aim of this study was to compare IOL pseudophacodonesis after cataract surgery in eyes with and without PXF or history of ocular trauma.

Setting:

Vienna Institute for Research in ocular surgery, Department of Opthalmology, Hanusch Hospital, Vienna, Austria

Methods:

In this prospective single-center study, 40 patients with and 20 patients without PXF or after blunt ocular trauma will be included. Standard cataract surgery with phacoemulsification and irrigation/aspiration of cortical material will be performed. In all eyes a novel, dynamic purkinje meter system will be used to measure lens and IOL dangling with high-frequency video image capture. With dynamic purkinje meter video capture, tilt, decentration and visual acuity measurements will be performed pre-operatively and repeated 2 months post-operatively. Additionally, patients will be asked to complete a customized questionnaire to assess subjective quality of vision.

Results:

Clinical feasibility of the dynamic purkinjemeter was already assessed at our Department, where 80 pseudophakic eyes with IOLs of different overall IOL design and IOL haptic design, as well as in eyes with and without PXF were measured. Results for the clinical comparison concerning pseudophakodonesis will be presented. Furthermore, pre-operative crystalline lens wobble data will be used to calculate the predictability for post-operative pseudophakodonesis for each eye individually.

Conclusions:

This novel device may be useful to assess whether pre-operative crystalline lens dangling can be used to predict intra-operative capsular complications and the amount and incidence of post-operative pseudophakodonesis.

Financial Disclosure:

-