Figure 1.

 Distribution of data for each of the tests. (A) Conventional stray light meter. (B) New stray light meter. (C) Nyktotest without glare. (D) Nyktotest with glare. (E) Mesotest without glare. (F) Mesotest with glare. Note that the vertical scaling differs between panels. For the CSLM and NSLM, there are hardly any “normal” young or elderly subjects who display “impaired” test results (low false positives). Some elderly (and young) subjects display “impaired” results on the Nyktotest and Mesotest without glare, and even more so on the Nyktotest and Mesotest with glare (higher false positives). Results are shown for right eyes only. Results for left eyes and binocular tests are similar.