Doctors & Staff

Meet the experienced and friendly doctors and staff who make Marciano Optique at Avenir a proud provider of vision care products and services in Palm Beach Gardens.

Crystal Postell Horn, O.D.

Dr. Crystal Postell Horn, O.D., is a board-certified optometric physician that has joined our team in March 2026. She provides comprehensive eye examinations to adults, children and senior citizens. She developes a positive patient relationships through providing exceptional care. Dr. Horn fits and dispenses contact lenses, including soft and bifocals. Her examinations include screening for any ocular signs of systemic diseases, such as hypertension, diabetes, and thyroid disorders. She collaborates with ophthamologists, opticians, primary care and other healthcare professionals to maintain a high level of patient retention and referrals.

Brandee O Marciano, O.D.

Brandee Owens Marciano, O.D. is a board-certified optometric physician who is originally from Sacramento, California. She received a Bachelor’s of Communications at the University of California. She graduated in 1998 from the New England College of Optometry in Boston, Massachusetts.

Dr. Brandee Marciano is a past president of the Palm Beach County Optometric Association in 2011-2012 and continues to serve as a volunteer for both the Florida Optometric Association and the American Optometric Association. She has had extensive training in the co-management of refractive surgery and in pediatric eye care. Dr. Brandee Marciano performs comprehensive eye exams and specializes in contact lenses, dry eye disease and ocular disease management. She is committed to treating and managing patients with ocular surface disease, including blepharitis, keratitis sicca (dry eyes) and other ocular surface complications.

Along with her husband, Dr. Mark Marciano, she has been practicing in West Palm Beach since 1999. Dr. Mark and Dr. Brandee met in optometry school and were married, April 2000. They have two sons, Adam, and Thomas, both attending Florida State University. Building a family-oriented optometric practice together has been their long-time dream. Their goal is to give your family the same attention they provide their own.

Mark T. Marciano, O.D.

Mark T. Marciano, O.D. is a board-certified optometric physician. He was born and raised in Toronto, Ontario Canada. Dr. Mark Marciano received his Bachelor of Science at Queen’s University in Kingston, Ontario Canada. He graduated in 1998 from Nova Southeastern College of Optometry in Florida where he was on the Dean’s list for academic achievement and received the Chancellors’ Award for clinical and academic excellence. Following graduation, he performed his residency at the Braverman Eye Center in Hallandale Beach, Florida. In 2007, Dr. Mark Marciano received the Distinguished Alumni Award at the NSU College of Optometry and was nominated for Alumni of the Year for the entire NSU college in 2021.

Dr. Mark Marciano is a past president of the Palm Beach County Optometric Society and recently completed his tenure on the Florida Optometric Association, serving as president in 2022-2023. Dr. Mark Marciano has a love of giving back to his community. In 2017, he was elected to the city council in Palm Beach Gardens, FL and served as the city’s Mayor in 2019-2020. He recently completed his two, 3-year terms and now serves as a board member for the Palm Beach North Chamber of Commerce. Dr. Mark Marciano has always maintained a love of patient care by performing comprehensive eye exams and specializes in the management of ocular disease, including cataracts, glaucoma, macular degeneration and refractive surgeries. He has developed a specialty in hard-to-fit contact lenses, including soft, hard (rigid gas permeable), hybrid and scleral contact lenses for complex patients. He is also certified in the management of myopia control for younger patients.

Along with his wife, Dr. Brandee Marciano, he has been practicing in West Palm Beach since 1999.

Kelley | Assistant Manager

Kelley brings 10 years of experience and a patient-first mindset to our optometry practice. She is committed to delivering exceptional service and is known for her compassionate approach and dedication to exceeding patient expectations.

She supports our team, ensures smooth daily operations, and maintains consistent communication with patients to provide a seamless and positive experience. Her goal is to create an environment where every patient feels prioritized and well cared for.

In Kelleys free time she enjoys racing cars, her two grey cats, and a good bowl of ice cream.