Final answer:
Option D is correct because vision typically takes 4 to 6 weeks to fully improve after cataract surgery. Intensive activities should be avoided right after the surgery to allow proper healing.
Step-by-step explanation:
The correct statement that indicates an understanding of the discharge teaching after cataract surgery is Option D: "It might take 4 to 6 weeks for my vision to fully improve." After cataract surgery, it is common for the vision to gradually improve over a few weeks as the eye heals. Intensive activities such as lifting heavy objects or running a vacuum cleaner should be avoided in the immediate postoperative period to prevent increased intraocular pressure that can affect the surgical site. Eye patches may be used but generally not as long as three days continuously. Reading without glasses can vary based on the power of the intraocular lens that is implanted and the individual's overall vision needs.