The phrase "Royal College of Ophthalmologists" refers specifically to the organization responsible for the training and certification of ophthalmologists in the United Kingdom. However, there are other phrases and terms that can be used interchangeably to refer to similar organizations in other countries. Some possible synonyms might include "National Association of Ophthalmologists," "Academy of Ophthalmology," "Ophthalmological Society," or "College of Eye Surgeons." These different terms all refer to groups of medical professionals who specialize in the diagnosis and treatment of eye and vision disorders, and who work to advance the field of ophthalmology through research, education, and professional development.