Keith Rasmussen, OD

Sioux Falls, SD

Dr. Rasmussen is a Fellowship-trained optometrist and one of the first members of Vance Thompson Vision’s doctor team. He brings a wealth of knowledge and experience to his patients’ care, the optometry field, and his co-workers. Read More


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Meet Dr. Rasmussen

Dr. Rasmussen has spent the majority of his career with Vance Thompson Vision. He is a current member of the American Optometric Association, the South Dakota Optometric Society, and the Nevada Optometric Physicians Association. Dedicated to helping patients achieve their best vision and eye health, Dr. Rasmussen is generous with his time and expertise. He is specifically trained to diagnose and facilitate treatment for disorders, diseases, and injuries to the eye.


  • Mount Marty College, Yankton, SD
  • Pacific University College of Optometry, Forest Grove, OR
  • Eye Care Associates of Nevada Fellowship

Personal & Hobbies

Keith and wife, Sara, have four children. He grew up on a farm near Howard, SD, learning to hunt pheasants and waterfowl, fishing in Lake Thompson, and practicing shooting sports with his father. He continues these beloved activities today with his own children as often as possible.

Prioritizing Research

Dr. Rasmussen is highly regarded in his field as an author and researcher. In the early 2000s, he conducted and published a study entitled An Epidemiological Overview of Pediatric Visual Impairment in the State of Oregon. Dr. Rasmussen continues to pursue research projects through his role at Vance Thompson Vision and has been part of more than 50 research studies during his time at Vance Thompson Vision.

Our Research

Keith Rasmussen, OD Reviews

April 23, 2024

Dr. Rasmussen explained everything to me and made it easy for me to make a plan. Thank you!

March 20, 2024

Dr. Rasmussen is Awesome! You can feel how much he cares about his patients!

March 13, 2024

I was very pleased with Dr Rasmussen! He explained everything to me in detail & gave me my options. He spent adequate time with me & I didn’t feel rushed. Excellent Doctor & I would recommend anyone to him!

February 29, 2024

Dr. Rasmussen was amazing! He explained things very well and took his time in the visit.

January 3, 2024

My visit to Vance Thompson Vision, specifically with Dr. Rasmussen, exceeded my expectations. Dr. Rasmussen's expertise shone through as he conducted a thorough eye exam, explaining each test in detail. What stood out was his genuine interest in addressing my questions and ensuring I felt comfortable throughout the process. The staff's friendliness added a welcoming touch, making the entire experience pleasant. The facility's modern amenities and cutting-edge technology showcased a commitment to providing top-tier eye care. Dr. Rasmussen's professionalism, combined with his approachable demeanor, made me feel confident in the care I received. I left Vance Thompson Vision with not just improved vision but also a positive impression of their exceptional service. I wholeheartedly recommend Dr. Rasmussen for anyone seeking personalized and expert eye care.

Schedule a Consultation

Dr. Rasmussen is a member of Dr. Thompson’s team. To schedule a consultation with the Thompson team, simply call the number below or click Contact Us, and we’ll be in touch shortly. We are honored by the opportunity to serve you.

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