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Multifocal electroretinogram and optical coherent tomography: prediction of visual outcome after epiretinal membrane removal.
- Source :
-
Clinical & Experimental Optometry . May2011, Vol. 94 Issue 3, p296-301. 6p. 3 Charts, 3 Graphs. - Publication Year :
- 2011
-
Abstract
- The aim was to evaluate the value of multifocal electroretinogram (mfERG) and optical coherence tomography (OCT) in predicting post-operative visual acuity (post-VA) after removal of an idiopathic epiretinal membrane (ERM). Fifty-one eyes of 51 patients with an idiopathic macular ERM were examined by OCT and mfERG before three-port pars plana vitrectomy with removal of the ERM. The parameters of the OCT images and mfERGs, pre-operative visual acuity (pre-VA) and the duration of symptoms (DS) were compared with the post-VA. The pre-VA (r = 0.570, p < 0.001) and the duration of the symptoms (r = 0.389, p < 0.035; n = 35) were significantly correlated with the post-VA. The central retinal thickness (CRT) was significantly correlated with the pre-VA (r = 0.379, p < 0.01) and the post-VA (r = 0.318, p < 0.03). The amplitudes of macular electroretinogram (amERGs) were not significantly correlated with the pre-VA or post-VA. The CRT to amERG ratio (CRT/amERG) was correlated with the post-VA (r = 0.429, p < 0.002) but not with the pre-VA (p > 0.1). Comparative analyses among groups of cases based on CRT/amERG showed significant differences in the post-VA but not in the pre-VA and the duration of symptoms. As with the large CRT/amERG, the pre-operative morphologically thickened and electroretinographically reduced retinas have a greater likelihood of being affected by the irreversible photoreceptor damages that could have been masked or modified by other factors before the removal of the ERM. Because the CRT/amERG values are obtained objectively, they should be valuable in predicting the post-operative visual function along with the pre-VA and the duration of symptoms. [ABSTRACT FROM AUTHOR]
- Subjects :
- *RETINA
*ELECTRORETINOGRAPHY
*TOMOGRAPHY
*COHERENCE (Optics)
*VISUAL acuity
Subjects
Details
- Language :
- English
- ISSN :
- 08164622
- Volume :
- 94
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Clinical & Experimental Optometry
- Publication Type :
- Academic Journal
- Accession number :
- 60232550
- Full Text :
- https://doi.org/10.1111/j.1444-0938.2011.00604.x