The present invention relates to antisense oligonucleotides (oligomers) that are complementary to HTRA1, leading to modulation of the expression of HTRA1. Modulation of HTRA1 expression is beneficial for a range of medical disorders, such as macular degeneration, e.g. age-related macular degeneration.本發明係關於與HTRA1互補之反股寡核苷酸(寡聚物),其導致調節HTRA1表現。調節HTRA1表現有益於一系列醫學病症,諸如黃斑變性,例如年齡相關黃斑變性。