RAST's New Braunfels office opened on July 1, 2026 and is accepting patients.
Retina Associates of South Texas, P.A.
Preserving Vision.
Advancing Retinal Care.
- Independent & Physician-Owned
- Fellowship-Trained Retina Specialists
- Rooted in South Texas since 1996

Experiencing sudden vision changes? Retinal emergencies require immediate care. Call 210-615-7600 — a physician is on call 24 hours a day.
1996
Serving South Texas
5
Board-Certified Specialists
4
Clinic Locations
68
Years of Combined Experience
Latest Updates
News and announcements from Retina Associates of South Texas.
Learn about ENCELTO, the first FDA-approved treatment for adults with Macular Telangiectasia Type 2 (MacTel) — and who may be a candidate.
Learn about Valeda light therapy, a noninvasive treatment option for certain patients with dry age-related macular degeneration.
Our Specialists
Five fellowship-trained vitreoretinal surgeons with subspecialty expertise and deep roots in South Texas medicine.

Timothy Cleland, MD, M.S.E.
Co-Founder & President
Ochsner Retina and Vitreous

Juan Rubio Jr., MD, M.S.
Vitreoretinal Surgeon
Charles Retina Institute

Enchun Liu, MD
Vitreoretinal Surgeon
The Retina Institute of St. Louis

Waseem Ansari, MD
Vitreoretinal Surgeon
The Retina Institute of St. Louis

Huy Nguyen, MD, MBA
Vitreoretinal Surgeon
Washington University in St. Louis
Conditions We Treat
Our specialists diagnose and treat the full spectrum of vitreoretinal disease.
- Diabetic Retinopathy
- Age-Related Macular Degeneration
- Retinal Detachment
- Retinal Tears
- Flashes & Floaters
- Macular Hole
- Macular Pucker
- Retinal Vein Occlusion
- Retinal Artery Occlusion
- Uveitis
- Central Serous Retinopathy
- Cystoid Macular Edema
- Diabetic Macular Edema
- Ocular Melanoma
- Retinopathy of Prematurity
- Vitrectomy
- Intravitreal Injections
- Laser Treatments
Four Convenient Locations
Serving patients across San Antonio, Laredo, and New Braunfels.
San Antonio — Northside
9910 Huebner Road, Suite 100, San Antonio, TX 78240210-615-7600Get Directions →Committed to Research
Our physicians actively participate in clinical trials, ensuring patients have access to the most advanced treatments in vitreoretinal medicine.