Abstract
Purpose:
Recently, favorable results have been reported in the inverted inter limiting membrane (ILM) peeling for full-thickness macular hole (MH), the stuffing proliferative membrane including macular pigment for lamellar hole associated with epiretinal proliferation (LHEP), and the foveal sparing ILM peeling for myopic retinoschisis (MR). To evaluate the visualization of remaining ILM and/or proliferative membrane in gas filled eyes after pars plana vitrectomy (PPV) for MH, LHEP, and MR using swept source optical coherence tomography (SS-OCT).
Methods:
Nineteen eyes of 18 patients (9 men, 9 women, average 64 years old) were examined using SS-OCT (DRI-OCT, Topcon, Japan). Facedown posturing was started just after PPV. OCT was obtained before surgery (baseline), under gas sufficiency, and after gas absorption.
Results:
Thirteen eyes with MH, five eyes with LHEP, and one eye with MR were included. Mean axial length was 26.5mm. Averaging OCT images were obtained even under gas sufficiency in all cases. Hyperreflective bridge formation and MH closure were observed under gas sufficiency in all MH cases. Hyperreflective tissue at the fovea was visible in all LHEP and MR cases. When MH closure or no MH formation was confirmed, face down was discontinued. No residual MH or no MH formation was observed after gas absorption.
Conclusions:
Remaining ILM and/or proliferative membrane in gas filled eyes was observed as the hyperreflective tissue in SS-OCT. Macular imaging under gas sufficiency may be helpful to reduction of imposition posturing.