A nurse is performing an admission assessment on a client who has a history of glaucoma and uses latanoprost (Xalatan) eye drops.. Brown pigmentation of the iris

A nurse is performing an admission assessment on a client who has a history of glaucoma and uses latanoprost (Xalatan) eye drops. Which assessment finding would indicate a side effect of these eye drops?
a) Elevated blood pressure
b) Irregular pulse
c) Periorbital edema
d) Brown pigmentation of the iris***