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Hiroki Watanabe, Fumiki Okamoto, Yoshimi Sugiura, Yoshifumi Okamoto, Tetsuro Oshika; Stereopsis and the Optical Coherence Tomography Findings Following Epiretinal Membrane Surgery. Invest. Ophthalmol. Vis. Sci. 2014;55(13):1159.
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© ARVO (1962-2015); The Authors (2016-present)
To quantify stereopsis in patients undergoing vitrectomy for epiretinal membrane (ERM), and to investigate the relationship between stereopsis and foveal microstructures with spectral-domain optical coherence tomography (SD-OCT).
This study included 45 eyes of 45 patients who underwent successful vitrectomy for unilateral idiopathic ERM. We examined stereopsis using the Titmus Stereo Test (TST), TNO stereotest, and SD-OCT before surgery and 6 months after surgery. Central foveal thickness (CFT), central retinal thickness at the parafovea (CRT-3mm), and macular volume (MV) were measured with the SD-OCT software. The status of the photoreceptor inner and outer segment junction (IS/OS) and external limiting membrane (ELM) was also evaluated.
Stereopsis assessed with TST and TNO stereotests was significantly better postoperatively than preoperatively. Both preoperative and postoperative TST scores were significantly correlated with pre- and postoperative logarithm of minimum angle of resolution best-corrected visual acuity (logMAR BCVA). Similar results were obtained also with TNO stereotest. Preoperative TST scores showed a significant association with preoperative CFT. Preoperative TNO scores were significantly correlated with preoperative MV. In both stereotests performed postoperatively, no significant relationship was found between stereopsis and postoperative retinal factors. Multiple regression analysis revealed that postoperative TST score was significantly related to preoperative CFT, whereas other parameters were not relevant.
Vitrectomy for ERM significantly improved stereopsis, which was associated with visual acuity. TST score was related to foveal thickness, while TNO stereotest score was correlated with macular volume.
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