The SD-OCT Characteristics After 577nm Laser Membranotomy of Sub-inner Limiting Membrane Hemorrhage

Abstract Background We investigate the SD-OCT features of sub-inner limiting membrane (sub-ILM) hemorrhage after 577nm laser membranotomy. Methods The ocular fundus photography and SD-OCT of patients who received 577nm laser membranotomy for sub-ILM hemorrhage were assessed from January 2017 to March 2021 in this retrospective cases series study. Results Total of 7 patients (7 eyes) were enrolled in this study, in which 3 were female and 4 were male. The SD-OCT of ILM after laser treatment showed two distinctive features: the ILM falling back to retina (4 cases) or persistent unsealed ILM which forming premacular cavity (3 cases). The SD-OCT of macular fovea after laser treatment showed three features: normal contour (3 cases), macular hole (1 cases) and epiretinal membrane (1 case). The outer retina showed “peg-like” or “patchy-like” structure on the site of ILM attached to retina.Conclusions 577nm laser is effective in treating of sub-ILM hemorrhage and SD-OCT is effective for diagnosis and following-up of sub-ILM hemorrhage.