Swedish version of the Massof activity inventory to measure vision‐related activity difficulties among patients with nAMD

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Aims/Purpose: The aim of this study was to assess vision‐related activity difficulties among patients with neovascular AMD using a Swedish version of the mass of activity inventory (MAI).Methods: Participants were patients diagnosed with neovascular AMD receiving treatment for the disease in a hospital in southeast Sweden. Participants completed the Swedish version of the MAI questionnaire. MAI can be used to measure the overall visual ability and visual ability in 4 functional domains: reading, mobility, visual motor function and visual information processing. Best corrected distance and near visual acuity (VA) were also measured.Results: Among the 196 participants (mean age = 78.5 years, SD = 7.67, 66% female) the median VA in the better seeing eye was 0.18 logMAR (IQR = 0.34), and in the worse eye was 0.54 logMAR (IQR = 0.98). The median visual ability for all participants was 1.92 logits (IQR = 2.69). There was a significant negative correlation between distance VA in the better eye and visual ability (rho = −0.4025, p < 0.01). Using ROC curves, we tested the capacity of the MAI to detect cases of any vision impairment (VA worse than 0.3 logMAR in the better seeing eye), the area under the curve (AUC) was 0.717 (95% CI = 0.643–0.791 p < 0.001). When we tested for detection of moderate vision impairment (VA worse than 0.5 logMAR in the better seeing eye) the AUC was 0.738 (95% CI = 0.648–0.829 p < 0.001).Conclusions: The results indicate that the Swedish version of the MAI produce measures of visual ability that are consistent with clinical measures among patients with nAMD. The Swedish version of the MAI can be used as outcome measure in interventions for people with nAMD.