This study has now closed 

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:

**This study has now closed 

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