Her Royal Highness Princess Chulabhorn was admitted to Ramathibodi Hospital in Bangkok for eye and back treatment on Monday.
The Royal Household Bureau announced that Her Royal Highness Princess Chulabhorn had developed back pain and blurred vision in both eyes.
Royal doctors conducted initial examinations and concluded that more extensive tests were needed to determine appropriate treatment.
They proposed that Her Royal Highness Princess Chulabhorn suspend her work and be admitted to Ramathibodi Hospital on Monday.
