Final answer:
The nurse should instruct the client to avoid bright lights and wear sunglasses for a week after the laser trabeculoplasty procedure for primary open-angle glaucoma.
Step-by-step explanation:
The nurse should provide the following instruction to the client: "Avoid bright lights and wear sunglasses for a week after the procedure." This is because laser trabeculoplasty may cause temporary sensitivity to bright lights, and wearing sunglasses can help protect the eyes during this time. The other options are not appropriate instructions for a client undergoing laser trabeculoplasty for primary open-angle glaucoma.