Dr. Ulate obtained his professional titles in the main university in Costa Rica. He carried out their clinical practices in the best Costa Rican hospitals and his residence program in the biggest and most important hospital in Costa Rica, the Hospital Mexico. He has worked as Ophthalmologist in the Services of Ophthalmology of the main Hospitals of Costa Rica; Hospital Mexico, Hospital San Juan de Dios, in the Hospital Enrique Baltodano Briceño (Liberia), in the Clí nica Oftalmológica de la CCSS (Social Security of Costa Rica) and in the private practice in the Centro Oftalmológico Guanacaste and in the Hospital Clínica Bíblica. He is active member of the Asociación Costarricense de Oftalmología, of the American Acade my of Ophthalmology, of the American Society of Cataract and Refractive Surgery. Wide experience in the diagnosis and treatment of ocular diseases, especially in the field of the refractive surgeries, cataract surgeries and implant of intraocular lens