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Yoshimi Sugiura; Metamorphopsia and optical coherence tomography findings following surgery for idiopathic macular hole. Invest. Ophthalmol. Vis. Sci. 2015;56(7 ):5074.
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© ARVO (1962-2015); The Authors (2016-present)
To quantify metamorphopsia in patients undergoing vitrectomy for idiopathic macular hole (MH) and to investigate the relationship between metamorphopsia and foveal microstructure.
Thirty-four eyes of 34 patients with idiopathic MH were included. The severity of metamorphopsia was recorded using the M-CHARTS and foveal microstructure was assessed with spectral-domain optical coherence tomography (OCT) preoperatively and at 3 and 6 months postoperatively. Based on the obtained OCT images, we quantified the following parameters: minimum and base diameters of MH, macular thickness, defect lengths of external limiting membrane (ELM), ellipsoid zone, cone outer segment tips (COST) and area of intraretinal cysts within the fluid cuff.
Mean metamorphopsia score was significantly improved from 0.80 to 0.40. Vertical and horizontal metamorphopsia scores were also significantly improved from 0.87 to 0.47 and from 0.73 to 0.36, respectively. Postoperative mean metamorphopsia score significantly correlated with preoperative base diameters of MH (p < 0.05), macular thickness (p < 0.05), defect lengths of ellipsoid zone (p < 0.05) and COST (p < 0.05), and area of cysts in fluid cuff (p < 0.005). Stepwise multiple regression analysis revealed that postoperative mean metamorphopsia score was significantly relevant to area of intraretinal cysts within the fluid cuff (p < 0.005). Postoperative vertical and horizontal metamorphopsia scores were also significantly correlated with area of intraretinal cysts within the fluid cuff (p < 0.05, p < 0.005, respectively).
Vitrectomy for MH improved metamorphopsia. Postoperative metamorphopsia was associated with preoperative area of intraretinal cysts within the fluid cuff.
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