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Table 1 Cross-table illustrating the categorization of subjects according to visual impairment of both eyes in the population-based Gutenberg Health Study (2007–2012)

From: Vision-related quality of life considering both eyes: results from the German population-based Gutenberg Health Study (GHS)

  Worse-seeing eye:
No VI Mild VI Moderate/severe
Better-seeing eye: No VI “b0/w0”, n = 11,021 “b0/w1”, n = 430 “b0/w2”, n = 395
Mild VI / “b1/w1”, n = 35 “b1/w2”, n = 34
Moderate/severe VI / / “b2/w2”, n = 26
  1. BE Better-seeing eye, WE Worse-seeing eye, VI Vision impairment; no VI: < 0.32 logMAR, mild VI: 0.32–0.5 logMAR; moderate/severe VI: > 0.5 logMAR