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Table 6 Mean scores for MacDQoL variables and vision measures. For distance VA and near VA, larger numbers indicate poorer vision. For contrast sensitivity, larger numbers indicate greater sensitivity. Larger numbers indicate poorer colour recognition and comfortable VA. For the glare test, larger numbers indicate a longer recovery time.

From: +Psychometric evaluation of the MacDQoL individualised measure of the impact of macular degeneration on quality of life

Variable   Mean s.d. Median
MacDQoL present QoL overview   0.90 1.13 1
MacDQoL MD-specific overview   -2.13 0.89 -2
MacDQoL AWI   -3.57 2.14 -3.7
Distance VA (logMAR) better eye 0.42 0.46 0.39
  worse eye 1.23 0.95 0.95
  binocular 0.39 0.46 0.37
Near VA better eye 0.45 0.43 0.3
  worse eye 1.09 0.58 1.1
  binocular 0.42 0.41 0.30
Contrast sensitivity better eye 1.01 0.77 1.05
  worse eye 0.43 0.49 0.15
  binocular 1.01 0.44 1.05
Comfortable VA   0.50 0.35 0.4
Colour recognition (errors)   21.60 7.74 21.9
Glare test recovery (seconds)   11.02 8.94 8.5