Before revision: Saunders Comprehensive Veterinary Dictionary, 3 ed.Farlex medical dictionary citing: Millodot: Dictionary of Optometry and Visual Science, 7th edition .Farlex medical dictionary citing: Mosby's Medical Dictionary, 8th ed.
After revision: Saunders Comprehensive Veterinary Dictionary, 3rd ed.Farlex medical dictionary citing: Millodot: Dictionary of Optometry and Visual Science, 7th ed .Farlex medical dictionary citing: Mosby's Medical Dictionary, 8th ed.