Vision Center & Family Ophthalmologist | San Antonio, TX | Alamo Ranch Eye

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christina bui md


I would like to say that I was very pleased with the care that I received from Dr. Bui. She is an excellent physician and I would recommend her to anyone in need of an eye doctor.

Christina M. Bui, M.D.

Board Certified Ophthalmologist, Founder of Alamo Ranch Eye

Dr. Christina M. Bui was born and raised in South Texas. Her father and mother were immigrants from Vietnam during the war.  Her father was an artist and painted signs to make a living in Corpus Christi, Texas.  Her mother was a school teacher in Vietnam and became a seamstress at Levi Strauss to support her five children.  After being on government assistance for a few years, they bought a home and raised five children.  The Bui’s moved to San Antonio in 1988 and eventually saved enough to send all their children to college.  They raised their kids with a strong work ethic and appreciation for education.

Being the middle of five children, Dr. Bui developed an innate desire to excel in everything she does.  Among many childhood lessons from her parents were painting, sewing, and playing the violin.  These skills were early signs of her excellent hand-eye coordination which would ease her into her studies of surgery.  In addition to her skill in the operating room, children and adults love her bedside manner.  Her compassionate understanding of Latino culture is evidence of her growing up in South Texas among Mexican-Americans.  She specifically has a special place in her heart for children of low-income families and children with special needs.

Dr. Bui is a native of San Antonio, graduating as Valedictorian of her John Jay High School class.   She received her magna cum laude undergraduate degree in Ecology and Evolutionary Biology at Rice University in 1997. She then graduated from medical school at the University of Texas Health Science Center at San Antonio in 2001, where she met her husband, Dr. Murali Mamidi, a pediatric anesthesiologist with Tejas Anesthesia. In 2005 she completed her ophthalmology residency at Vanderbilt University, being awarded Best Resident in Research.  Dr. Bui attended business school at Texas A&M Corpus Christi in 2007.

Dr. Bui has published several papers in peer-reviewed journals and presented research papers in the field of glaucoma, pediatric ophthalmology, retina, and neuro-ophthalmology.

From 2008-2010, she worked at Sudarshan Eye Experts (Brownsville, Weslaco, and Edinburg, TX) with Dr. Alexander P. Sudarshan, MD.  From 2010 to 2011, she was a comprehensive ophthalmologist with a specialization in cataract surgery and pediatrics at Ophthamic Consultants of Texas in Harlingen and McAllen, TX.  Dr. Bui has participated and organized humanitarian projects in Solapur, India and Ben Tre, Vietnam. 

David Holck, MD

Alamo Ranch eye partners with David Holck, MD to offer care in oculoplastics and orbit.

Board Certified Ophthalmologist

Dr. Holck is a board certified ophthalmologist and Fellow of the American Society of Ophthalmic Plastic and Reconstructive Surgery (ASOPRS). He has over 27 years experience in medicine and has limited his practice to oculofacial plastics, orbit, reconstructive, lacrimal surgery and ocular oncology for the past 18 years.  He provides a wide range of services including functional and aesthetics surgery. 

Dr. Holck has a B.S. in chemstry with honors from Miami University and recieved his medical degree from the Uniformed Services University of the Health Sciences.  He complete ophthalmology residency training at the University of Illinois Eye and Ear Infirmary and fellowship training in oculofacial plastics and ocular oncology at Duke University Medical Center.

A former Chairman and Residency Program Director of the Department of Ophthalmology, he has also been Director of Oculoplastics and Ocular Oncology at Wilford Hall Medical Center.  He was selected as the outstanding medical center physician (Gold Headed Cane Award) in 2005.  Additionally, he initiated the first ASOPRS-approved oculoplastics fellowship training in South Texas, training both national and international fellows.

Dr. Holck is an active clinician-scientist who has authored over 100 research articles, chapter and is senior editor of the textbook, "Evaluation and Treatment of Orbital Fractures: a Multidisciplinary Approach."  He is a senior Acheivement Award member of the American Academy of Ophthalmology and an executive member of ASOPRS.  He served on the Advisory Committee of the National Institutes of Health and is on clinical faculty at The University of Texas Health Science Center at San Antonio as well as The Uniformed Services University of the Heatlh Sciences, Bethesda, Maryland.

Dr. Holck has participated in numerous humanitarian medical and surgical mission trips to Africa, India, and Central and South America.  He regularly teaches courses on facial trauma repair as well as aesthetic face, eyelid, and brow rejuvenation nationally and internationally.

Dr. Holck provides a wide range of services including functional and aesthetic oculofacial surgery, orbital, lacrimal, ocular oncology and reconstructive services.

James Lehmann, MD

Lehmann photo

Alamo Ranch Eye parters with Focal Point Vision.

Board Certified Cataract, Cornea, and Refractive Specialist

Dr. Lehmann is a board-certified eye surgeon who specializes in cataract, corneal, and refractive surgery. He is a graduate of Seguin High School and the University of Texas at Austin (Plan II). After completing his residency and fellowship at the UT Southwestern Medical Center at Dallas in 2007, he returned to South Texas to join Focal Point Vision.

Dr. Lehmann's practice includes medical and surgical ophthalmology, and he manages both common conditions, like cataracts, and rare, complex diseases like corneal dystrophies and ocular surface injuries. He has an interest in complicated anterior segment surgery and has pioneered the use of The Boston Keratoprosthesis and Deep Anterior Lamellar Keratoplasty in San Antonio.

Dr. Lehmann is a member of the American Academy of Ophthalmology, the American Society of Cataract and Refractive Surgery, the Order of St. John, and is Assistant Clinical Faculty at the UT Health Science Center.

In addition to clinical research and scientific presentations, Dr. Lehmann performs volunteer clinical and surgical duties at the I Care Clinic at the Haven for Hope. He also travels abroad several times a year to teach and perform surgery. In February, he traveled to Huatulco, Mexico with the Episcopal Diocese of Sheridan, Wyoming to perform cataract surgery, and he just returned from Trujillo, Peru, where he was a volunteer faculty with ORBIS International, teaching local residents and doctors new techniques in cataract and corneal surgery.

Dr. Lehmann is married with three children, and he speaks Spanish fluently. Along with Drs. Maverick and San Martin, our mission is to provide the highest level of clinical and surgical care, using the most advanced technologies with compassion and respect.

Kenneth Maverick, MD

Alamo Ranch Eye parters with Focal Point Vision.

Board Certified Cataract, Cornea, and Refractive Specialist

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Dr. Maverick is a fifth generation native of San Antonio, having returned to his home after many years of Ophthalmology, Corneal and Refractive Surgery training.

He is board certified by the American Association of Ophthalmology and continues his interests in optics, advanced intraocular lenses, corneal transplantation, and refractive surgery. He was asked by the American Academy of Ophthalmology to author the Refractive Surgery chapter of the Eye Care Skills software, the primary source of content for teaching other physicians advanced technologies in refractive surgery. For 2009 to 2013, The Consumers Research Council named Dr. Maverick as one of America's Top Ophthalmologists. San Antonio Magazine named Dr. Maverick as "Best Physician's in San Antonio" for 2009-2013. For 2011 to 2013 he was also named by San Antonio Magazine as a "Best Doctor" in Ophthalmology.  He was also named one of the "Best Doctors in America" for Ophthalmology by his peers according to Best Doctors, Inc. year after year.

Dr. Maverick has been the first and is the most experienced eye surgeon in the area using the latest technology.  He and Dr. Lehmann are the most experienced in DSEK, Visian ICLs, and All Laser Cataract Surgery with Premium IOLs.   Dr Maverick performed the first DSEK, ICL and All Laser Cataract surgeries in South Texas and continues to advance these technologies. He and Dr. Lehmann, with the San Antonio Eye Bank, developed the first autologous serum tear program in the area for patients withsevere dry eyes.

Dr. Maverick graduated with honors from Alamo Heights High School then attended the University of Notre Dame where he graduated Cum Laude with a Bachelor of Arts degree in Economics and a Bachelor of Science degree in Professional Sciences. While at Notre Dame he also acted as Sports Director at WVFI Radio announcing Notre Dame sports and hosting a sports talk show.

Dr. Maverick attended The University of Texas Medical School in Houston where his interest in Ophthalmology began. Upon graduation with honors from medical school, he fulfilled a medical internship at St. John's Mercy Medical Center in Saint Louis, where he completed specialty training in Emergency Medicine, Rheumatology, Dermatology, Neuro-imaging and Plastic Surgery.

Dr. Maverick was honored to be accepted into the prestigious Ophthalmology Residency at Washington University in St. Louis, which consistently ranks in the top ten programs for eye care and training, and in the top two institutions for eye research.  Dr. Maverick was then invited for specialty training in the Corneal, External Disease and Refractive Surgery Fellowship at Washington University.

He was a pioneer in bringing the latest advancement in corneal transplantation (DSEK or DLEK) to San Antonio and South Texas.  He was the first and most experienced surgeon in the area performing this breakthrough corneal transplant surgery.  He is the Medical Director of the San Antonio Eye Bank overseeing the quality of the donor tissues for San Antonio and for distribution around the world. 

Wes Johnston, Optician

Wes Johnston

Wes Johnston is our optician/optical manager. He comes with over ten years in opticianry. His experience stems from both a medical and retail background of the optical business.

He began his career in Houston, at Spectacles on Montrose, where for over five years he learned to appreciate numerous variables of unique and high end eyewear. He then moved on to Dr. Tomy Starck's medical practice at Ultravision/Ultraoptik, where he fitted patients for both routine and complex prescriptions. Most recently, he worked at Abba Optical, a retail optical in San Antonio, Texas.

Wes brings his knowledge of fashionable and distinctive eyewear, along with superior knowledge of lens materials and functional styles of lenses. This allows Alamo Ranch Eye to better accommodate each patient’s individuality and visually demanding occupations. Wes thrives to provide a unique and professional touch to Alamo Ranch Eye's optical dispensary.

In his free time, Wes enjoys playing golf, painting, watching football, and spending time with his two young boys. Wes enjoys people of all ages and interests, and looks forward to meeting with you.

Mike Villanueva, Certified Ophthalmic Technician

Miguel Villanueva Ophthalmic TechnicianMiguel "Mike" Villanueva is our certified ophthalmic technician.  He has over ten years experience in his field, most recently working at the practice of Dr. David Shulman and Fernando Trujillo in San Antonio.  Prior to that, he was on the staff of Sudarshan Eye Experts in Brownsville, TX.  He has extensive knowledge ophthalmic assistant training.  He is currently an instructor at Southwest Texas Eyecare in Eagle Pass.

Mike enjoys his free time with his family, including his wife Nora and a four year old daugther Natalia.


Fernanda Reyes, Receptionist

Fernanda Reyes Receptionist

Alamo Ranch Eye is pleased to have Fernanda as our receptionist.  She is a college student at Southwestern, majoring in fashion design.