Official ESCRS | European Society of Cataract & Refractive Surgeons
Copenhagen 2016 Registration Programme Exhibitor Information Virtual Exhibition Satellite Meetings Glaucoma Day 2016 Hotel Star Alliance

10 - 14 Sept. 2016, Bella Center, Copenhagen, Denmark

This Meeting has been awarded 27 CME credits


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Clinical and biometric determinants of effective lens position after cataract surgery

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Session Details

Session Title: IOL Power Calculations

Session Date/Time: Sunday 11/09/2016 | 16:00-18:00

Paper Time: 16:00

Venue: Hall C2

First Author: : D.Hoa FRANCE

Co Author(s): :    J. Plat   F. Mura   T. Busetto   A. Payerols   M. Villain   V. Daien     

Abstract Details


We aimed to investigate the clinical and biometric factors associated with ELP after cataract surgery.


Effective lens position (ELP) in the capsular bag is one of the main issues in refractive outcomes after cataract surgery.


This was a single-center prospective study conducted in the University Hospital of Montpellier, France in patients who underwent uncomplicated phacoemulsification. Clinical factors (age, sex, history, pre-operative refraction, keratometry, vitreous status) and biometric factors (axial length, pachymetry, anterior chamber depth, lens thickness, white-to-white distance) which may affect ELP were collected. Each patient underwent optical biometry preoperatively and 1 month postoperatively. ELP was measured by the C constant. The power and type of IOL were used to stratify patients into 3 groups: SN60WF or SN6AT (toric) (Alcon®); ZCB00 or ZCT (toric) (Abbott®); and Asphina 409 MV (Zeiss®).


We included 244 eyes from 181 patients (mean age 73.1 ± 9.3 years). The C constant was 0.38 ± 0.04, 0.44 ± 0.05, 0.39 ± 0.06 for the IOLs Alcon® (n=85 eyes), Abbott® (n=84 eyes), and Zeiss® (n=75 eyes) groups, respectively. In the overall population anterior chamber depth (ACD) and anterior segment depth (ASD) were correlated with ELP (overall r = -0.44, p <0.0001; r = -0.31, p <0.0001, respectively). ELP was not correlated with age, sex, refraction, keratometry findings, white-to-white distance, axial length, or vitreous status. The observed relations between ACD, ASD and ELP remained significant after adjusting for potential confounding factors.


We found ACD and ASD correlated with ELP. The integration of these data in IOL formulas could help to improve refractive outcomes after cataract surgery.

Financial Disclosure:


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