Related Experiment Video
Updated: Jun 19, 2026
Measurement of Carotenoids in Perifovea using the Macular Pigment Reflectometer
Published on: January 29, 2020
Clinical evaluation of the MacuScope macular pigment densitometer
Hannah Bartlett1, Jennifer Acton, Frank Eperjesi
1Ophthalmic Research Group, School of Life and Health Sciences, Aston University, Birmingham, UK. H.E.Bartlett@aston.ac.uk
Background/Aims:
The MacuScope uses a psychophysical technique called heterochromic flicker photometry to measure macular pigment optical density (MPOD). Our aim was to determine the measurement variability (noise) of the MacuScope.
Methods:
Thirty-eight normally sighted participants who ranged in age from 19 to 46 years (25.7+/-7.6 years) were recruited from staff and students of Aston University. Data were collected by two operators, HB and JA, in two sessions separated by 1 week in order to assess test repeatability and reproducibility.
Results:
The overall mean MPOD for the cohort was 0.47+/-0.14. There was a significant negative correlation between MacuScope MPOD readings and age (r=-0.368, p=0.023). Coefficients were 0.45 and 0.58 for repeatability, and 0.49 and 0.36 for reproducibility. For each pair of results, there was a significant positive correlation between mean and difference MPOD values.
Conclusions:
If MPOD is being monitored over time then any change less than 0.58 units should not be considered clinically significant as it is very likely to be due to instrument noise. The size of the coefficient appears to be positively correlated with MPOD.
More Related Videos
10:14Ex Vivo OCT-Based Multimodal Imaging of Human Donor Eyes for Research into Age-Related Macular Degeneration
Published on: May 26, 2023
07:18Evaluation of Capillary and Other Vessel Contribution to Macular Perfusion Density Measured with Optical Coherence Tomography Angiography
Published on: February 18, 2022