Age-corrected reference values for the Heidelberg multi-color anomaloscope

摘要

Background To determine reference values for the HMC anomaloscope (Heidelberg multi-color anomaloscope) of healthy subjects. Methods One hundred and thirteen healthy subjects were divided into four age groups: <20 years of age (ten female, five male), 20-39 years of age (23 female, 15 male), 40- 59 years of age (23 female, ten male) and>60 years of age (nine female, 18 male). Match midpoint, matching range (MR) and anomaly quotient (AQ), according to the Moreland equation [blue (436 nm) + blue-green (490 nm) 0 cyan (480 nm) + yellow (589 nm)] and according to the Rayleigh equation [green (546 nm) + red (671 nm) 0 yellow (589 nm)] were determined. The neutral adaptation was done showing white light every 5 seconds in absolute mode and every 15 seconds in relative mode. Results The mean match midpoint according to the Rayleigh equation was 43.9±2.6 scale units in absolute mode. It was highest between 20-39 years (45.2±2.2) and lowest in subjects >60 years of age (42.2±2.2). The mean MR in absolute mode was 3.1±3.5 scale units with a maximum >60 years (4.4±4.4). The MR in relative mode was between 1.6±1.9 (20-39 years) and 4.4±3.8 (>60 years). The resulting mean AQ was 1.01±0.15 in both modes. The mean match midpoint of the Moreland equation was 51.0±5.2 scale units in absolute mode. It was highest between 20-39 years (52.5±5.7), and lowest in subjects >60 years of age (48.7±3.6). The meanMR according to the Moreland equation was lower in absolute mode (13.4±15.6) than in relative mode (16.2±15.2). The mean resulting AQ was 1.02±0.21 in both modes. Conclusion The values of this study can be used as references for the diagnosis of red-green and blue perception impairment with the HMC anomaloscope.