This survey consists of questions related to blue light filtering (commonly known as ‘blue blocking’) ophthalmic devices and is designed for completion by qualified optometrists. The survey should take about 5 minutes to complete. The survey is anonymous and your participation in this study is completely voluntary. Your completion of the survey implies your consent to participate in this research project.

If you have questions about this research, please contact one of the researchers:

Mr. Sumeer Singh (Ph: 03 9035 9804, email:

Dr. Laura Downie (Ph: 03 9035 3043, email:

Dr. Andrew Anderson (Ph: 03 9035 9916, email:

Thank you for contributing to our research project.

This project has received ethics approval from the University of Melbourne Human Research Ethics Committee (HREC #185156.1).