Long-term natural history of idiopathic epiretinal membranes with good visual acuity.

Upon completion of this activity, participants will be able to: In support of improving patient care, this activity has been planned and implemented by Medscape, LLC and Springer Nature. Medscape, LLC is jointly accredited by the Accreditation Council for Continuing Medical Education (ACCME), the Accreditation Council for Pharmacy Education (ACPE), and the American Nurses Credentialing Center (ANCC), to provide continuing education for the healthcare team. Medscape, LLC designates this Journal-based CME activity for a maximum of 1.00 AMA PRA Category 1 Credit(s). Physicians should claim only the credit commensurate with the extent of their participation in the activity. All other clinicians completing this activity will be issued a certificate of participation. To participate in this journal CME activity: (1) review the learning objectives and author disclosures; (2) study the education content; (3) take the post-test with a 75% minimum passing score and complete the evaluation at www.medscape.org/journal/eye; (4) view/print certificate. 1.0 Release date: 19 April 2019 Expiration date: 19 April 2020 Post-test link: https://medscape.org/eye/posttest909693 S.S. has disclosed the following relevant financial relationships: Served as an advisor or consultant for: Allergan, Inc.; Bayer AG; Boehringer Ingelheim Pharmaceuticals, Inc.; Heidelberg Pharma GmbH; Novartis Pharmaceuticals Corporation; Optos; Roche. Served as a speaker or a member of a speakers bureau for: Allergan, Inc.; Bayer AG; Novartis Pharmaceuticals Corporation; Optos. Received grants for clinical research from: Allergan, Inc.; Bayer AG; Boehringer Ingelheim Pharmaceuticals, Inc.; Novartis Pharmaceuticals Corporation; Optos. L.S.M. has disclosed the following relevant financial relationships: Served as an advisor or consultant for: Genentech, Inc.; IRIDEX Corporation. Served as a speaker or a member of a speakers bureau for: Genentech, Inc.; IRIDEX Corporation. Received grants for clinical research from: Genentech, Inc. S.S.P. has disclosed the following relevant financial relationships: Received grants for clinical research from: Allergan, Inc.; Roche/Novartis Pharmaceuticals Corporation. G.Y. has disclosed the following relevant financial relationships: Served as an advisor or consultant for: Alimera Sciences; Allergan, Inc.; Carl Zeiss Meditec; IRIDEX Corporation. Received grants for clinical research from: Alcon Laboratories, Inc.; IRIDEX Corporation. K-Y.L., T.K., A.Y., L.M., B.P.D-J., A.M. have disclosed no relevant financial relationships. Laurie Barclay has disclosed no relevant financial relationships. To evaluate the long-term progression of idiopathic epiretinal membranes (iERMs) with good baseline visual acuity, and to identify predictors of visual decline. Retrospective case series We reviewed records of 145 eyes with iERM and best-corrected visual acuity (BCVA) of 20/40 or greater at presentation, including BCVA, lens status, and central macular thickness (CMT) at yearly visits; as well as anatomic biomarkers including vitreomacular adhesion, pseudohole, lamellar hole, intraretinal cysts, disorganization of the inner retinal layers (DRIL), and disruption of outer retinal layers. Linear mixed effects and mixed-effects Cox proportional hazards models were used to identify clinical and anatomic predictors of vision change and time to surgery. At presentation, mean BCVA was 0.17 ± 0.10 logMAR units (Snellen 20/30) and mean CMT was 353.3 ± 75.4 μm. After a median follow-up of 3.7 years (range 1–7 years), BCVA declined slowly at 0.012 ± 0.003 logMAR units/year, with phakic eyes declining more rapidly than pseudophakic eyes (0.019 ± 0.003 vs. 0.010 ± 0.004 logMAR units/year). Metamorphopsia, phakic lens status, lamellar hole, and inner nuclear layer cysts were associated with faster visual decline. Cumulative rates of progression to surgery were 2.9, 5.6, 12.2, and 21.1% at years 1–4. Visual symptoms, metamorphopsia, greater CMT, and disruption of outer retinal layers were associated with greater hazard for surgery. Eyes with iERM and visual acuity ≥ 20/40 experience slow visual decline, with 21% of eyes requiring surgery after 4 years. Clinical and anatomic predictors of vision loss may be distinct from factors associated with earlier surgical intervention.