The King made his first appearance at a Sunday church service since undergoing treatment for an enlarged prostate.
Charles, accompanied by the Queen, walked to St Mary Magdalene Church in Sandringham, Norfolk, where he smiled and waved to the public.
The monarch had been discharged from the London Clinic last Monday after a three-night stay for a corrective procedure related to the benign condition.
The Queen has taken on additional public engagements as both Charles and Kate recover, with William supporting his family and taking a break from royal events.
Reports suggest Charles may take up to a month off from public duties during his recovery.
Whilstt opening a cancer support centre at the Royal Free Hospital in London, Camila mentioned that her husband is "doing his best" after his hospital release.
NHS England said the “enlarged prostate” page on the NHS website received one visit every five seconds on the day the King’s diagnosis was announced, with further huge boosts in visits in the days that followed.
The Queen continues to fulfill senior royal family duties, emphasizing the importance of health awareness within the community.