What type of diabetes causes blindness?

Type one and type two. Both of these types can cause many severe complications if not controlled. Gestational diabetes is what many women get during pregnancy. After the child is born, the gestational diabetes is not detected any longer...BUT...more than 65% of women that get gestational diabetes develop type 2 later in life. Diabetes can cause many complications like, disease of the eye, blindness, artery disease, heart disease, heart attack, stroke, kidney failure, amputations of limbs...many things if it is not controlled well.