About Us

Dr. Kaylin (Krein) Johnston was born and raised in Devils Lake. After graduating from Devils Lake High School in 2012, she pursued her Bachelor’s degree in Biology at the University of Mary in Bismarck. After completing her undergraduate degree summa cum laude in 2015, she attended Pacific University College of Optometry in Forest Grove, Oregon. She received her Doctor of Optometry with distinction in 2019. She then returned to Devils Lake to begin her career at The Eye Clinic. Dr. Johnston is a member of the North Dakota Optometric Association, the American Optometric Association, and the Devils Lake Rotary Club. She also serves on the advisory board for the Health Careers program at the Lake Area Career and Technical Center. Dr. Johnston enjoys seeing patients of all ages. She also enjoys getting to know her patients and tailoring her care to each individual’s needs. Dr. Johnston and her husband Adam have one daughter, Tessa, and a golden retriever, Harvey.

Dr. Mark Moen grew up in the town of Mayville, North Dakota. He graduated from Mayville-Portland High School in 1976. He then attended college at Mayville State College, University of North Dakota, and North Dakota State University. He earned his Doctor of Optometry degree from the Southern California College of Optometry in 1985, graduating with honors. He began practicing optometry in Devils Lake later that year. He is a past president of the North Dakota Optometric Association and is a current member of the North Dakota Optometric Association, American Optometric Association, and the Devils Lake Lions Club. Dr. Moen prides himself in staying current with the ever changing landscape of optometric technology and patient care options. Dr. Moen and his wife Sonja have two children, Aric and Evan.