Vitrectomy with internal limiting membrane peeling and gas tamponade for myopic foveoschisis

BACKGROUND: We evaluated the effect of vitrectomy with internal limiting membrane (ILM) peeling and gas tamponade for myopic foveoschisis (MF), and analysed prognosis with different gas tamponade. METHODS: Retrospective, non-randomized study. The records of patients with MF treated by vitrectomy, were reviewed. Patients were followed up postoperatively mean 16.74 months, to record changes of Best-corrected visual acuity (BCVA) and central foveal thickness (CFT). RESULTS: Sixty-two eyes (59 patients) were analysed in total, with mean age of 55.29 ± 10.34 years, 49 females (83.1%). Foveoschisis completely resolved in all eyes at least 6 months post vitrectomy, except for two postoperative full-thickness macular holes (FTMH). Final BCVA improved significantly from 0.69 ± 0.39 to 0.44 ± 0.42 logMAR, and CFT from 502.47 ± 164.78 to 132.67 ± 52.26 μm. Patients were subdivided into three subgroups based on the different endotamponades used (C3F8, C2F6, and air). Baseline BCVA, baseline CFT and foveal detachment (FD) were not significantly different among the three groups. Eyes treated with air tamponade had better visual outcomes than eyes with C3F8 tamponade (P = 0.008). Baseline BCVA and FD were significant risk factors for postoperative BCVA (P < 0.001 and P = 0.013, respectively). CONCLUSIONS: Vitrectomy with ILM peeling and gas tamponade results in good functional and anatomic outcomes in the treatment of most MF. Good vision and no-FD pre-surgery are related with good visual prognosis. Air tamponade can provide as good visual recovery as expansive gas, and reduce postoperative complications.