Science and Research

LIANA: Subthreshold laser treatment in intermediate age-related macular degeneration with nascent geographic atrophy study

This study is a prospective, single centre, randomized, sham-controlled, double-masked, clinical trial which aims to investigate the effect of subthreshold nanosecond laser on disease progression in eyes with intermediate age-related macular degeneration (AMD) and nascent geographic atrophy by functional and anatomical outcomes.



The study population will be individuals with high-risk intermediate age-related macular degeneration who meet all eligibility criteria. 60 subjects total (30 randomized to receive subthreshold nanosecond laser (SNL) treatment and 30 to receive sham treatment as per the 1:1 randomization).

The study has a 12-month study period with four scheduled visits: screening, randomisation (first treatment), 6-month follow up visit (with second treatment where eligible), 12-month follow-up.

The primary outcome is the proportion of laser-treated study eyes that develop late AMD compared to sham-treated study eyes over 12 months. The key secondary outcome is the change in retinal function of laser-treated study eyes compared to sham-treated study eyes over 12 months. Safety will be the proportion of laser-treated eyes that lose 10+ letters of vision (measured on a standard vision chart) compared to sham-treated eyes over 12 months.

  • Principal Investigator
Professor Robyn Guymer AM

Learn more

View this study at ClinicalTrials.gov

This database listing provides more detailed information about this study.