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Year : 2012  |  Volume : 2  |  Issue : 2  |  Page : 56-59

Comparison of visual outcomes after epiretinal membrane surgery

1 Department of Ophthalmology, Chang-Gung Memorial Hospital, Keelung; Chang Gung University College of Medicine, Taoyuan, Taiwan
2 Chang Gung University College of Medicine, Taoyuan; Department of Ophthalmology, Chang-Gung Memorial Hospital, Linkou, Taiwan

Correspondence Address:
Chi-Chun Lai
Department of Ophthalmology, Chang Gung Memorial Hospital, 5 Fu-Hsin Street, Kwei-Shan, 333 Taoyuan
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Source of Support: None, Conflict of Interest: None

DOI: 10.1016/j.tjo.2012.03.002

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Purpose: To elucidate the anatomical and visual outcomes of patients with idiopathic epiretinal membranes (ERM) who underwent vitrectomy, membrane removal only, or with internal limiting membrane (ILM) peeling under the assistance of different dyes. Methods: A retrospective chart review of patients with idiopathic ERM who received surgical treatment between January 2004 and December 2009. The patients were grouped according to the usage of staining materials assisting ILM peeling. Group 1 consisted of 61 eyes that underwent conventional vitrectomy and ERM peeling without staining-assisted ILM peeling. Group 2 consisted of 20 eyes with triamcinolone acetonide-assisted ILM peeling following conventional vitrectomy. Group 3 consisted of 23 eyes with indocyanine green-assisted ILM peeling following conventional vitrectomy. Results: This study included 104 eyes from 104 patients. There was no significant difference in age, sex, preoperative visual acuity, retinal thickness or follow-up duration among the three groups. Overall, the mean best-corrected visual acuity improved significantly from baseline 0.15 to postoperative 0.41 (p < 0.0001). Among the three groups, the mean logarithm minimum angle of resolution acuity markedly improved. There was no significant difference in postoperative visual acuity among groups. As measured by ocular coherent tomography, the mean central foveal thickness decreased from 465.21 ± 86.18 to 299.16 ± 70.14 mm. Although there was no difference between groups, postoperative retinal thickness was thicker than that observed in the normal population. The incidence of recurrent ERM was 13.1% in Group 1 and 0% in Groups 2 and 3; this incidence was significantly higher than in the conventional surgery group. Visual outcome was statistically more deteriorated in recurrent cases than in nonrecurrent cases (p = 0.011). Conclusions: ERM surgeries with or without dye-assisted ILM peeling showed similar results. Moreover, the incidence of recurrence is lower in the ILM peeling groups and plays a primary role in determining the final postoperative vision outcome.

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