Our Practice

Westheimer Vision Associates (WVA) is dedicated to building a relationship of trust with our patients by providing quality eye care services in a friendly and compassionate environment. Our experienced doctors and staff deliver peace of mind to our family of patients through their integrity and unwavering commitment to offering exceptional health care.

We are committed to providing each patient with quality vision care and outstanding patient service. The doctors of WVA treat patients like their own family and continue to remain up to date with the latest in scientific research in order to maintain the highest quality standard in health care. Their wide range of skills include specialty contact lens fits, surgical co-management, pediatric eye examinations, and treatment of ocular diseases, just to list a few.

Additionally, our highly trained professional staff will go above and beyond in ensuring unsurpassed service. From making your appointment and seeing the doctor to finally selecting your eye wear, our goal is to surpass your expectations by providing exceptional eye care in a pleasant and professional environment.


Christopher L. Simank, O.D.

Christopher Simank, O.D.Dr. Simank is a graduate of the University of St. Thomas and graduated from the University of Houston College of Optometry in 1996.

He is a Board Certified Optometrist and Certified Glaucoma Specialist. He has worked extensively in the areas of family eye care, the treatment of ocular disease, pediatrics, contact lenses and post-operative management of refractive surgery. He can also provide exams in Spanish.

He is a member of the American and Texas Optometric Associations and Harris County Optometric Society. Dr. Simank provides exams at no charge for patients in programs such as Eye Care for Kids Foundation, Prevent Blindness, and Vision USA. He is also a provider for InfantSee.

Dr. Simank lives in Katy with his wife and four children. He enjoys butterfly gardening, coaching basketball for his sons, and volunteering with the Seven Lakes High School Band. He is a member of Epiphany of the Lord Catholic Church.

Mallory B. Thornton, O.D.

Mallory Thornton, O.D. Dr. Thornton received her bachelor’s degree from Texas A&M University. She then graduated from the University of Houston College of Optometry in 2000. Dr. Thornton has been working in private practice since that time and joined Westheimer Vision Associates in 2003, becoming a partner in 2006.

Dr. Thornton specializes in contact lenses, surgical co-management and patient care including geriatric and pediatric populations. She is a Board Certified Optometrist and Certified Glaucoma Specialist.     Dr. Thornton enjoys working with children of all ages, and routinely does exams for kids 6 months of age and older.

Dr. Thornton is a native Texan having lived in Katy for over 20 years. She is a member of the American and Texas Optometric Associations and Harris County Optometric Society. Dr. Thornton provides exams at no charge for patients in programs such as Eye Care for Kids Foundation, Prevent Blindness - Partners in Prevention and Vision USA. She is also a provider for InfantSee.

Dr. Thornton is married and has two children. She is a native Texan having lived in Katy for over 30 years. Her past times include traveling, gluten-free cooking, and long distance running. She is a former member of Tallowood Baptist Church and a current member of Kingsland Baptist Church.

Heidi A. Barin, O.D.

Heidi A. Barin, O.D. Dr. Heidi Barin is a certified optometric glaucoma specialist and therapeutic optometrist. She received her bachelor’s degree from the University of Houston and doctorate from the University of Houston College of Optometry in 2011. She had clinical training at La Nueva Casa de Amigos Clinic and the Indian Health Services in Oklahoma.

Dr. Barin’s professional interests include contact lenses, surgical co-management care, comprehensive eye care to patients of all ages and the treatment of ocular diseases. She has participated in the Baylor Shoulder to Shoulder mission trip to Honduras and volunteers her time in local programs as well. In addition, she provides eye exams at no charge for patients in Prevent Blindness – Partners in Prevention, Vision USA, Eyecare for Kids Foundation and InfantSee.

Dr. Barin is an active member of the Harris Country Optometric Society, Texas Optometric Association, and American Optometric Association.

She was raised in Katy and currently resides in the Heights. In her spare time, she enjoys practicing photography, running and biking.

Gerald J. Romano, O.D. F.A.A.O.

Gerald Romano, O.D. F.A.A.O. Dr. Gerald Romano graduated in 1958 from the University of Houston College of Optometry. He served in the U.S. Air Force Medical Corps prior to joining his brother, Dr. Albert Romano in private practice.

Dr. Romano is a Certified Glaucoma Specialist and is also certified in the diagnosis and treatment of ocular diseases. He has a strong background in contact lenses and has been a clinical investigator for several contact lens manufacturers.

Dr. Romano is a past president of the Harris County Optometric Society and remains a member in this professional organization. In addition, he is a member of the American and Texas Optometric Associations. Dr. Romano is a fellow of the American Academy of Optometry. He provides exams at no charge for patients in programs such as Eye Care for Kids Foundation, Prevent Blindness - Partners in Prevention and Vision USA.

He has served on medical/vision missions for the Mayans in the mountains of Guatemala with Sending Out Servants since 2003.

Dr. Romano has been married to his wife for over 50 years. He has three sons and three grandchildren. He enjoys being an active volunteer and member of Christ the Redeemer Catholic Church.

Kelly N. Santesteban, O.D.

Kelly N. Santesteban, O.D.Dr. Santesteban received her bachelor’s degree from the University of Houston and doctorate from the University of Houston College of Optometry in 2006.

Dr. Santesteban is residency trained in corneal disorders and specialty contact lens fittings, including bifocals, post surgical and keratoconus cases. Dr. Santesteban is a certified glaucoma specialist and has been in practice since 2007. She joined WVA in 2008. She is a member of the American and Texas Optometric Associations.

Dr. Santesteban, a native Houstonian, speaks fluent Vietnamese and resides in Midtown. She is married with one child. She enjoys traveling all over the world and experiencing different cultures.