Ophthalmology with international training in San Luis Potosí
Diagnosis, treatment, and surgery for the leading eye conditions — with the heritage of Barcelona's Barraquer Institute and modern technology.
Pioneers in ophthalmology for over 40 years.
Fundación Castañón set new standards for eye care in San Luis Potosí thanks to Dr. Ricardo Castañón Moreno's international training at the Barraquer Institute in Barcelona, one of the world's most respected ophthalmology centers.
Today we carry on that tradition, combining surgical experience, modern equipment, and honest assessments: we tell you what your case needs — nothing more.
- Comprehensive eye examinations
- Outpatient surgery in our own operating rooms
- OCCHIO optical on-site for your eyewear
- Close post-operative follow-up
The first office 100% designed for children's eyes.
We created the first space fully conceived and designed for pediatric ophthalmology: a forest where children feel at ease — equipped to examine everyone from premature babies to teenagers, without leaving the room.
From day one of life
Eye assessments from birth — including newborn eye screening and detection of retinopathy of prematurity, the leading preventable cause of childhood blindness.
Everything in one place
Diagnostic equipment for every stage: from premature babies to teenagers. No exam requires leaving the room or changing locations.
Protecting tomorrow's vision
Amblyopia, strabismus, and refractive errors correct best when caught early. We care today for the eyes your children will see with all their lives.
A forest turned doctor's office.
Martha Giselda Rangel Charqueño, MD
Eye Surgeon · Fellowship-trained Pediatric Ophthalmologist
A space like this deserves expert care. Dr. Rangel is an eye surgeon with fellowship training in pediatric ophthalmology, research lines in retinopathy of prematurity and retinoblastoma, and a career that combines clinical practice with research, public health, and the training of new physicians.
- Pediatric Ophthalmology Fellowship · National Institute of Pediatrics (UNAM)
- Ophthalmology Residency · Hospital Central "Dr. Ignacio Morones Prieto" (UASLP)
- M.Sc. in Clinical Research (UASLP) and Master of Public Health (INSP)
- Board-certified by the Mexican Council of Ophthalmology (2023) · Recertified 2022–2026
- Member of the San Luis Potosí College of Ophthalmologists, the Mexican Society of Ophthalmology, and the Mexican Association of Pediatric Ophthalmology
- Professor, School of Medicine · UASLP
Professional license 2867978 · Specialty license 3815448 · S.S.A. S.L.P. 2757/-99-MC-0
Book a pediatric appointmentWhat we treat.
Comprehensive eye exams
Full evaluation of visual acuity, intraocular pressure, fundus examination, and overall eye health.
Cataract surgery
Phacoemulsification with advanced intraocular lenses. An outpatient procedure with fast recovery.
Glaucoma
Early detection, medical management, and laser or surgical treatment to preserve your field of vision.
Retina
Diagnosis and management of diabetic retinopathy, macular degeneration, and other retinal conditions.
Refractive errors
Myopia, hyperopia, and astigmatism: precise prescriptions backed by our OCCHIO optical shop.
Book your eye exam
Your eyesight deserves specialist care — in Spanish or English. Write to us and we'll find the right time for you.