8-OH-DPAT (8-Hydroxy-DPAT) is a classic, potent and selective agonist of 5-HT1A with pIC50 of 8.19 for 5-HT1A. It has a selectivity of almost-1000 fold for a subtype of the 5-HT1 binding site, and a Ki of 466 nM for 5-HT7; 8-OH-DPAT weakly binds to 5-HT1B with pIC50 of 5.42 and pIC50 <5 for 5-HT. Also It is able to reduce the accumulation of both autophagic-derived and photoreceptor outer segment-derived lipofuscin, increase antioxidant protection and reduce oxidative damage in cultured human RPE cells.