Approximately 12 sites will randomize a total of approximately 120 subjects . The subject randomization code table is generated using block randomization. Randomization of not less than 120 cases receiving treatment (treatment and placebo groups) at a ratio of 1:1 for the treatment and control groups.~Clinic study visits will occur on Day -7 to Day -1(Screening/Baseline)(Randomization); Treatment Visits for weeks 4, 8, 12,16,20,and 24 (all ± 3 days); sites will contact each subject to update efficacy date and adverse events (AEs) and review concomitant medications (CMs).
This is a phase 2, randomized, double-masked, placebo-controlled, multicenter study. To evaluate the efficacy and safety of QA108 granules in the treatment of intermediate age-related macular degeneration.