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Clinical comparison of optical with swept source-assisted biometry for combined phacovitrectomy with ILM-peeling

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Session Details

Session Title: Presented Poster Session: Cataract Surgery Outcomes

Venue: Poster Village: Pod 1

First Author: : E.Vounotrypidis GERMANY

Co Author(s): :    V. Haralanova   A. Wolf   T. Kreutzer   S. Priglinger   W. Mayer  

Abstract Details


To compare a standard optical with a swept source assisted biometry device for combined phacovitrectomy with ILM-peeling in terms of cataract and vitreoretinal diseases.


Department of Ophthalmology, Ludwig-Maximilians-University Munich, Germany.


67 eyes of 63 patients with age related cataract, corneal astigmatism below 1.5 diopters and either epiretinal membrane formation, macular hole or retinal detachment without macular involvement underwent combined micro-incision cataract surgery and 23g vitrectomy with ILM-peeling. Objective and manifest refraction, CDVA, IOL Master 500 and 700 measurements as well as Pentacam and macular OCT examinations were performed preoperative and six weeks after surgery. Prediction error (PE) and absolute error (AE) with Haigis and SRK-T formulas were calculated using both biometry devices and data was statistically compared. 44 eyes with age-related cataract underwent cataract surgery and served as control group.


Axial length varied between 21.91mm and 29.48mm (mean: 23,83mm) in the phacovitrectomy group and from 22.87mm to 23.60mm (mean: 23,23mm) in the phaco group. PE was significant lower in the phaco group compared to the phacovitrectomy group (p=0.018). Although emmetropia was planned for all cases, a low myopic shift was postoperatively detected, irrespective of biometry device and formula (p>0.05). The IOL-Master 700 showed a higher, but not statistically significant, precision with regard to PE and AE compared to the IOL-Master 500 for both groups as well as in the subgroup analysis with regard to the preoperative diagnose (p>0.05)


Both biometry devices showed excellent results in term of lens power calculation for phacovitrectomy, but with lower impact on prediction error when compared to cataract surgery. IOL Master 700 shows a higher, but not significant, precision irrespective of the axial length or the preoperative diagnose in comparison to the IOL Master 500

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