Down syndrome and hypercholesterolemia mouse models suggest that the DSCR-1 gene protects against abnormal cornea vascularization and associated blindness by suppressing oxidized LDL cholesterol production and downstream angiogenic signaling during chronic high cholesterol. While the neurological pathology of Down syndrome patients worsens with age, they are less susceptible to age-related vascular diseases. The responsible genes and mechanisms are not yet clear, but DSCR-1 is a strong candidate for a wide range of vascular diseases.