Dr. Alfredo Castillo, an esteemed Ophthalmologist with 27 years of extensive experience, is a leading specialist at the Universitario Quirónsalud Hospital in Madrid, Spain. Having earned his Bachelor of Medicine and Surgery in 1989, he pursued a specialization in Ophthalmology from 1991 to 1994, culminating in the completion of his PhD thesis in 1994. Dr. Castillo further enriched his knowledge with a scholarship at Harvard University in 1995-1996, focusing on Cornea and Ocular Immunology in Massachusetts. Throughout his illustrious career, Dr. Castillo has been a trailblazer in the field, contributing significantly to Ophthalmology. He serves as the Founding Partner and Consultant of the Ophthalmology Clinic since 1994. His expertise spans various areas, including cataract surgery, refractive surgery, retina, strabismus, cornea, and glaucoma. Notably, he held the position of Associate Physician in the Glaucoma Department at San Carlos Clinical Hospital from 1997 to 2006 and worked as an Attending Physician at Massachusetts Eye & Ear Infirmary of Harvard Medical School in 1995. Dr. Castillo has garnered recognition, winning the First Prize in the Refractive Surgery category at the Symposium on Cataract, IOL, and Refractive Surgery of the American Society of Cataract and Refractive Surgery (ASCRS) in 1997 and 1998. His impressive list of achievements also includes being a Scientific Evaluator for the Archive of the Spanish Society of Ophthalmology since 1998. With a wealth of publications, including 75 international and national magazine articles, 450 participations in national congresses, and authorship of 48 books and monographs, Dr. Alfredo Castillo stands as a distinguished figure in the field of Ophthalmology.