Abortion legislation: What is the Eighth Amendment?

It was entered into the Constitution, under the ‘Fundamental Rights’ heading, in October 1983 following a referendum on abortion.
It reads as: “The State acknowledges the right to life of the unborn and, with due regard to the equal right to life of the mother, guarantees in its laws to respect, and, as far as practicable, by its laws to defend and vindicate that right.”