P. Douglas Becherer
O.D., F.A.A.O.
Dr. Becherer joined his father in practice after completing his training. He and his wife Carla have 2 adult children.
Dr. Becherer received his B.A. from Southern Illinois University, Carbondale, and his doctorate from Southern College of Optometry. He is a fellow in the American Academy of Optometry. He has chaired many committees for both the American Optometric Association and the American Academy of Optometry. He is a fellow in the prestigious National Academy of Practice, which limits membership to 150 specialists from each of the ten health care fields.
Dr. Becherer has published and lectured extensively on contact lens care and has completed over 60 research clinical investigations of new products leading to FDA approval. Because of his expertise on contact lens care, he has been interviewed 50 times on T.V., radio and in newspapers. Dr. Becherer holds a patent for a special contact lens and has designed several specialty lenses for two contact lens companies. He has developed specialized prescribing techniques used daily by doctors. He developed a computerized contact lens designing methodology for challenging cases. He then developed a custom soft bifocal contact lens. This is the first totally custom bifocal that can be designed specifically for the patients needs to within micron accuracy. These lenses have helped people with large and unique prescriptions.
Dr. Becherer is on the Board of Directors for UMB Bank, and on the board of Special Eyes Contact Lens Company. He has been on the advisory board of directors for Wesley-Jessen Contact Lens Co.; for Ciba Contact Lens Co.; for Paragon Contact Lens Co.; for Konan Medical Equipment Co.; and for Tomey Medical Equipment Co.
Dr. Doug Becherer is on the Illinois State Board of Optometry which monitors the licensed optometrists in the state and protects the citizens of Illinois. He is Past-chairman of the American Optometric Association Contact Lens and Cornea Section. He is also Past President and Optometrist of the Year of the Heart of America Contact Lens and Cornea Society. Dr. Becherer is Past President of the Southwestern Illinois Optometric Society. He is an Adjunct Clinical Professor at the University of Missouri-St. Louis, College of Optometry; Southern College of Optometry, Memphis, TN and Illinois College of Optometry, Chicago, IL.
He is an Adjunct Clinical Instructor at Washington University, School of Medicine, Department of Ophthalmology. He has personally trained over 70 externs in his practice.
Dr. Becherer has been the Educational Chairman of Contact Lens Educational Symposium, the American Optometric Association Contact Lens & Cornea Section and also the Heart of America Contact Lens Society. He has given over 130 lectures at every major optometric meeting and lectured to thousands of doctors and optometry students.
Dr. Becherer’s office was one of 10 sites selected to participate in the 48 month SMART STUDY. The study confirmed the safety and effectiveness of eliminating and controlling myopia in young patients using a special vision restoring contact lens during sleep and comparing them to the same age group wearing top quality soft contact lenses. Presently, Dr. Becherer is developing a unique soft contact lens to control myopia.
Nicholas Holtzman
O.D., M.S.
Dr. Nicholas Holtzman provides comprehensive eye care at Dr. Becherer & Associates in Swansea and Lakepointe Vision Center in O’Fallon, Illinois. His clinical interests include ocular disease management, glaucoma, specialty and custom contact lenses, dry eye disease, and binocular vision disorders. He is especially passionate about patient education, taking the time to explain complex eye conditions and treatment options in a clear, approachable way.
Dr. Holtzman earned his bachelor’s and master’s degrees in Kinesiology from Southern Illinois University Carbondale before receiving his Doctor of Optometry degree from the University of Missouri–St. Louis. During his studies, he served as an American Optometric Student Association Trustee, assistant class representative, and teaching assistant in Anatomy, Physiology, and Ocular Disease. He was also awarded the Dr. Frank D. Fontana Scholarship for clinical care and the Excellence in Advocacy of Optometry Award.
Dedicated to advancing the profession, Dr. Holtzman serves as President of the Southwestern Illinois Optometric Society and as a regional captain for the Illinois Optometric Association. He is also a member of the American Optometric Association and helps educate future optometrists through clinical mentorship and preceptorship.
As Dr. Becherer’s son-in-law, Dr. Holtzman is proud to continue the Becherer family’s multigenerational tradition of eye care. He is committed to providing personalized, patient-centered care while supporting the future of independent optometry.
Outside the office, Dr. Holtzman enjoys spending time with his wife, Courtney, their two children, August and Heidi, and their dog, Chewbacca. Together, they enjoy hiking, biking, skiing, camping, and exploring the outdoors.
Dr. David Campbell
Dr. David Campbell joined the practice in 2026. Born and raised in St. Louis, he attended Saint Louis University, where he earned his Bachelor of Science in Biology in 2021 before earning his Doctor of Optometry at the University of Missouri- St. Louis. During optometry school, he was honored with the Award for Excellence in Ocular Disease in recognition of his outstanding clinical knowledge and patient care in the diagnosis and management of eye disease.
Dr. Campbell is excited to provide personalized, comprehensive eye care tailored to each patient’s individual needs. He has a passion for helping patients achieve their best vision while making every visit comfortable, informative, and welcoming. Whether providing routine eye exams, contact lens fittings, or managing ocular health conditions, Dr. Campbell takes pride in delivering attentive care.
Outside of the office, Dr. Campbell enjoys playing basketball and golf, spending time outdoors, and making memories with friends and family. His active lifestyle and strong personal connections inspire his commitment to helping patients maintain healthy vision for every part of life.
Adam Becherer
ABO Certified Optician
Meet Adam Becherer, our ABO-certified optician. Adam earned his Bachelor of Science degree from Southern Illinois University Edwardsville (SIUE) in 2009 and has more than 17 years of experience in the optical field. He received his ABO certification in 2014.
Adam works alongside our knowledgeable frame stylists to provide patients with comprehensive optical care and guidance. He is always happy to answer questions about the latest lens technologies, including digital progressive lenses, high-index lenses, myopia control, blue-light protection, digital eyestrain relief lenses, and specialized lenses for computer use or sports.
With so many options available, Adam enjoys helping patients select the lenses that best meet their individual vision needs. When it’s time to pick up their glasses, he takes the time to explain proper care and use while ensuring each pair is adjusted for optimal fit, comfort, and vision.
