title: Functional and Morphological Correlations before and after Video-Documented 23-Gauge Pars Plana Vitrectomy with Membrane and ILM Peeling in Patients with Macular Pucker.
abstract: Purpose. To assess functional and morphological alterations following video-documented surgery for epiretinal membranes. Methods. Forty-two patients underwent video-documented 23-gauge vitrectomy with peeling of epiretinal (ERM) and inner limiting membrane (ILM). Patient assessment was performed before and 3 and 6 months including best corrected visual acuity (BCVA), slit lamp biomicroscopy, SD-OCT, and central 2° and 18° microperimetry. In addition, all video-documented areas of peeling on the retinal surface were evaluated postoperatively using an additional focal 2° microperimetry. Retinal sensitivity and BCVA were correlated with morphological changes (EZ and ELM) in the foveal region and in regions of membrane peeling. Results. Overall, BCVA increased from 0.6 (±0.2) to 0.2 (±0.2) logMAR after 6 months with an increase in retinal sensitivity (17.9 ± 2.7 dB to 26.8 ± 3.1 dB, p < 0.01). We observed a significant correlation between the integrity of the EZ but not of the ELM and the retinal sensitivity, overall and in peeling areas (p < 0.05). However, no significant correlation between alterations in the area of peeling and overall retinal sensitivity regarding visual acuity gain could be observed after 6 months (p > 0.05). In contrast, overall postoperative retinal sensitivity was significantly decreased in patients with a visual acuity gain lower than 2 lines (p < 0.05) correlating with EZ defects seen in OCT. Conclusions. Mechanical trauma of epiretinal membrane and ILM peeling due to the use of intraocular forceps may affect the outer retinal structure. Nevertheless, these changes seem to have no significant impact on postoperative functional outcome.
authors.affiliation: Department of Ophthalmology, Ludwig Maximilian University of Munich, 80336 Munich, Germany.
authors.forename: Wolfgang J
authors.initials: WJ
authors.lastname: Mayer
authors.affiliation: Department of Ophthalmology, Ludwig Maximilian University of Munich, 80336 Munich, Germany.
authors.forename: Clara
authors.initials: C
authors.lastname: Fazekas
authors.affiliation: Department of Ophthalmology, Ludwig Maximilian University of Munich, 80336 Munich, Germany.
authors.forename: Ricarda
authors.initials: R
authors.lastname: Schumann
authors.affiliation: Department of Ophthalmology, Ludwig Maximilian University of Munich, 80336 Munich, Germany.
authors.forename: Armin
authors.initials: A
authors.lastname: Wolf
authors.affiliation: Department of Ophthalmology, Ludwig Maximilian University of Munich, 80336 Munich, Germany.
authors.forename: Denise
authors.initials: D
authors.lastname: Compera
authors.affiliation: Department of Ophthalmology, Ludwig Maximilian University of Munich, 80336 Munich, Germany.
authors.forename: Anselm
authors.initials: A
authors.lastname: Kampik
authors.affiliation: Herzog Carl Theodor Eye Hospital, 80335 Munich, Germany.
authors.forename: Christos
authors.initials: C
authors.lastname: Haritoglou