Final answer:
Physician Assistants and Nurse Practitioners can prescribe CII medications within their scope of practice, while the ability of Optometrists to do so is limited and varies by state.
Step-by-step explanation:
In the context of the medical profession, Controlled Substances Act (Schedule II/CII) prescriptions are a category of drugs that have a high potential for abuse and dependence. Physician Assistants (PAs) and Nurse Practitioners (NPs) can prescribe CII medications within their scope of practice, which varies by state. However, Optometrists primarily prescribe glasses, contact lenses, and medications to treat eye conditions; their ability to prescribe CII drugs is limited and varies significantly by jurisdiction, with many states not granting them this authority.