Influence of the diameter size of a persistent macular hole after primary pars plana vitrectomy, ILM-peeling and gas tamponade on the closure rate after repeat pars plana vitrectomy and gas tamponade

Session Details

Session Title: Free Paper Session 28: Vitreoretinal Surgery VII

Session Date/Time: Sunday 10/09/2017 | 12:00-13:30

Paper Time: 12:54

Venue: Room 116

First Author: : C.Baumann UK

Co Author(s): :    S. Wai Ch'ng   N. Patton   A. Jalil                       

Abstract Details


To analyse if the diameter size of a persistent macular hole (MH) after primary pars plana vitrectomy (PPV), internal limiting membrane (ILM) peel and gas tamponade has an influence on the closure rate after repeated PPV and gas tamponade.


Manchester Royal Eye Hospital, Manchester, U.K.


This is a retrospective observational study. The best corrected visual acuity (BCVA) and optical coherence tomography (OCT) measurement of diameter size of MH were analysed in the period before surgery, after primary PPV and after the second PPV. The patients were divided into Group A (persistent MH with at least 25% smaller diameter size after primary surgery) and Group B (persistent MH with less than 25% reduction in diameter size, same or larger diameter size after primary surgery). The primary outcome measure was to see if the change in diameter size of the MH after primary PPV will influence the closure rate of the MH after the second surgery. The secondary outcome measure was the functional outcome of the MH closure based on the BCVA.


So far a total of 8 eyes were analysed. The MH closure rate was 100% after the second PPV in Group A. In Group B, the persistent MH remained open after the second PPV in 100% of cases. Further data are still being evaluated and the total number of eyes will increase. Final results available by end of May 2017.


The prognosis for persistent MH closure after the second surgery is higher when the primary surgery had reduced the MH diameter size.

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