This study is testing a device called the SetPoint System for people with relapsing-remitting multiple sclerosis (RRMS). RRMS is a condition where the immune system attacks the protective covering of nerves, causing symptoms like muscle weakness and vision problems. The SetPoint System is a small device that gets implanted in the neck and gives tiny electrical signals to a nerve called the vagus nerve. This study will see if this helps repair the nerve covering, called myelin.

Key Points:

• Length and Visits: The study lasts about two years, with visits for surgery and follow-ups.
• Treatment Groups: Two-thirds of participants get the real device, and one-third get a non-active device initially.
• Risks: Surgery under general anesthesia is needed. There may be risks from the surgery and the device.

Participants must be between 22-50 years old and already on stable medication for RRMS. This study involves surgery and regular check-ups to monitor safety and effects. Participants should not have other eye problems or use nicotine products regularly.