  Through the action of an anti-holomorphic involution $\sigma$ (a real
structure) on a Riemann surface $X$, we consider the induced actions on ${\rm
SL}(r,\mathbb{C})$-opers and study the real slices fixed by such actions. By
constructing this involution for different descriptions of the space of ${\rm
SL}(r,\mathbb{C})$-opers, we are able to give a natural parametrization of the
fixed point locus via differentials on the Riemann surface, which in turn
allows us to study their geometric properties.
