Evaluation of retinal vascular structure after epiretinal membrane surgery by optical coherence tomography angiography
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ORIGINAL PAPER
Evaluation of retinal vascular structure after epiretinal membrane surgery by optical coherence tomography angiography Berna Yuce
. Esat Cinar
. Fatih Aslan
. Cem Kucukerdonmez
Received: 19 May 2020 / Accepted: 2 October 2020 Ó Springer Nature B.V. 2020
Abstract Purpose To evaluate the retinal vascular structure before and after the epiretinal membrane (ERM) surgery by optical coherence tomography angiography (OCTA). Methods Twenty-two eyes with ERM (study eyes) had been evaluated by OCTA for superficial capillary plexus (SCP) and deep capillary plexus (DCP) vessel density (VD) at foveal and parafoveal regions and foveal avascular zone (FAZ) before and after ERM removal surgery. Twenty-two fellow eyes were selected as control group.
B. Yuce (&) Izmir Tepecik Training and Research Hospital Ophthalmology Department, University of Health Sciences, Guney District, Street:1140/1 No:1, Yenisehir-Konak, Izmir, Turkey e-mail: [email protected] E. Cinar C. Kucukerdonmez Department of Ophthalmology, Ekol Hospital, Izmir, Turkey e-mail: [email protected] C. Kucukerdonmez e-mail: [email protected]
Results Preoperative VD of SCP and DCP were significantly lower in ERM eyes than in controls in both foveal and parafoveal areas (p \ 0.05, for all). The difference regressed in SCP (fovea: 18.04 ± 3.1 vs 19.98 ± 18 p = 0.002 and parafovea: 47.33 ± 3.54 vs 49.71 ± 28 p = 0.001), but persisted in DCP (fovea: 17.25 ± 3.52 vs 17.57 ± 4.01 p = 0.856 and parafovea: 50.12 ± 4.35 vs 50.93 ± 3.24 p = 0.791) in study eyes, postoperatively. Superficial and deep FAZ areas were significantly smaller in study eyes than controls. Postoperatively, superficial FAZ area enlarged (0.288 ± 0.10 vs 0.307 ± 0.08 p = 0.012), whereas deep FAZ area did not (0.324 ± 0.09 vs 0.338 ± 0.07 p = 0.435). FAZ area was correlated with the bestcorrected visual acuity in ERM eyes. Conclusion Vascular damage in SCP and DCP was demonstrated by OCTA in eyes with ERM. ERM removal surgery mainly improves superficial changes caused by ERM. Changes in deep retinal flow may be associated with visual outcomes after ERM removal surgery. Keywords Epiretinal membrane FAZ area Optical coherence tomography angiography Vessel density
F. Aslan Training and Research Hospital Ophthalmology Department, Alanya Alaaddin Keykubat University, Antalya, Turkey e-mail: [email protected]
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Int Ophthalmol
Introduction Epiretinal membrane (ERM) is a proliferative condition which is characterized with the tissue between the retinal surface and vitreous that may be idiopathic or secondary to uveitis, inflammation, trauma and diabetes mellitus [1]. Although it is not well understood yet, it was known that cells oriented from glial tissue play a main role. Furthermore, it was demonstrated that Mu¨ller cells and astrocytes display an active role in the proliferative process on the retinal surface and lead to folds and tractions [2]. ERM causes anatomical and functional deterioration of the retina. Increase
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