King Felipe has stayed in hospital overnight after undergoing surgery.
He left the clinic in the northern city of Oviedo on Sunday morning with strict instructions.
The King of Spain had a short operation to remedy cataracts in his left eye.
It took place just after 10pm local time on Saturday and lasted about half an hour.
As a result of the procedure, which took place on the evening of October 24, he remained in hospital overnight. His doctors said that was because they ended up taking him into the operating room quite late as his engagements that day had finished well into the afternoon.
Felipe VI left on October 25, wearing dark glasses, and with medical instructions to take things very easy for several days.
The operation was announced after completion.
Felipe VI, 58, is said to be recovering well.
The news of his surgery came just hours after three days in the northern region of Asturias where he had been supporting his elder daughter, Princess Leonor, in major events.
The Princess of Asturias Awards are handed out every October in a number of fields including the arts, sports and science. Leonor, who will turn 21 in just a few days time, presented the prizes in a ceremony in Oviedo with her parents, King Felipe and Queen Letizia, and her sister, Infanta Sofia, at her side, Her grandmother, Queen Sofia, watched from a balcony throughout the event which also saw Leonor give a speech.
Leonor, along with King Felipe and Queen Letizia as well as Infanta Sofia, then travelled to the Asturian coast where they awarded the annual prize for community of the year to the fishing fraternity of Llanes.
During the visit, they boarded a boat with Queen Letizia taking a tumble as she began to disembark. She was unhurt and her younger daughter, Sofia, 19, helped her to her feet again with both laughing.
After his operation, King Felipe said he was feeling well. It’s understood he will have to use eye drops for several days and remains under doctor’s orders to rest.
