This UQ study will investigate associations between chronic electronic device blue light exposure, dietary xanthophylls intake and macular pigment density in humans.

Participants will be asked to attend a single 1.5 hour visit to the School of Human Movement and Nutrition Sciences building to complete the following measures:

  • Fill out a questionnaire about your usual dietary intake, complemented by an interview with an Accredited Practising Dietitians.
  • Undergo a non-invasive test to measure the pigment density of the macula of the eye with the MPS II machine.
  • Have a small amount of blood drawn to measure the concentration of key carotenoids.
  • Undergo a measure of body composition via bioelectrical impedance scales.

After your visit you will also be asked to complete a single questionnaire about your electronic device use.

Participant benefits:

As a participant you will have the opportunity to gain knowledge about your MPOD. MPOD is an estimate of the concentration of L/Z in the macula. Concentration of L/Z is understood to be protective of  macular health, and can be improved by dietary sources. 


  • Males and females 18 to 65 years.
  • Healthy.
  • No history of clinically significant medical conditions including, but not limited to, cardiovascular, neurological, endocrine (including uncontrolled diabetes) or haemotogical abnormalities that are uncontrolled.
  • Non-smoker

Register your interest:

If you would like more information, please contact:

Naomi Fitzpatrick

This study has been approved by The University of Queensland Human Research Ethics Committee [Approval No. 2019002736]