Changes in metamorphopsia in daily life after successful epiretinal membrane surgery and correlation with M-CHARTS score
Takamasa Kinoshita,1,2 Hiroko Imaizumi,1 Hirotomo Miyamoto,1 Utako Okushiba,1 Yuki Hayashi,2 Takashi Katome,2 Yoshinori Mitamura2 1Department of Ophthalmology, Sapporo City General Hospital, Sapporo, Japan; 2Department of Ophthalmology, Institute of Health Biosciences, The University of Tokushima...
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| Formato: | article |
| Lenguaje: | EN |
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Dove Medical Press
2015
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| Acceso en línea: | https://doaj.org/article/0b8ffe268e2b46e39a4ab19f9a6aa89a |
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| Sumario: | Takamasa Kinoshita,1,2 Hiroko Imaizumi,1 Hirotomo Miyamoto,1 Utako Okushiba,1 Yuki Hayashi,2 Takashi Katome,2 Yoshinori Mitamura2 1Department of Ophthalmology, Sapporo City General Hospital, Sapporo, Japan; 2Department of Ophthalmology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan Purpose: To determine the correlation between the changes in metamorphopsia in daily life environment and the M-CHARTS scores after epiretinal membrane (ERM) removal, and to determine the criterion for determining whether clinically significant changes in the metamorphopsia score have occurred in M-CHARTS. Methods: We studied 65 eyes undergoing vitrectomy for unilateral ERM. Self-administered questionnaires were used to examine the metamorphopsia in their daily life. The degree of metamorphopsia was determined by M-CHARTS. The receiver operating characteristic curve was used to determine the best predictor of the changes in metamorphopsia in daily life. To determine the reproducibility of the M-CHARTS score, another set of 56 eyes with ERM was tested twice on two different days. Results: The postoperative changes in the logarithm of the M-CHARTS score was defined as M2-value. The area under the receiver operating characteristic curve for the M2-value as a predictor of the changes in metamorphopsia in daily life was larger than area under the receiver operating characteristic curve obtained for any other parameter. The optimal cutoff value was -0.4. The 95% limits of agreement between test and retest measurements had a reproducibility of ±0.3 logarithm of the M-CHARTS score. Taking into account not only the reproducibility but also the consistency with the subjective changes, we determined the criterion for clinically significant changes in the M-CHARTS scores as a change of the M2-value by ≥0.4. Conclusion: Evaluating the changes in the M-CHARTS scores in logarithmic form is favorable not only theoretically but also from the perspective of consistency with the subjective changes. Keywords: metamorphopsia score, ERM, criterion, vitrectomy |
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