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Doctors & Staff

Meet the experienced and friendly doctors and staff who make Eyes On Broad a proud provider of vision care products and services in Mansfield.

Ben Colston, O.D.

Dr. Ben Colston was raised in Arlington, Texas. He and his wife, Crystal both graduated from Pantego Christian Academy. He earned a Bachelor’s degree in Biology from the University of Texas at Arlington and his Doctorate of Optometry from the University of the Incarnate Word Rosenberg School of Optometry in San Antonio, Texas.

After his optometric education, he completed his clinical rotations at the Bob Michael Veterans Affairs Hospital in Illinois, the Bond-Wroten Eye Clinic in Louisiana, the lighthouse for the blind and the Bowden Eye Institute in San Antonio, Texas. He is licensed as a Therapeutic Optometrist and Optometric Glaucoma Specialist. He is also an active member of both the American Optometric Association and the Texas Optometric Association. Before opening Eyes on Broad, Dr. Colston practiced at two private practices in North Dallas and in Southlake, Texas.

He enjoys going on medical mission trips and has provided eye care to patients in Guatemala and the Island of St. Vincent. He likes reading, playing golf, and a good cheeseburger.

Si-On Kim, O.D.

Dr. Si-On Kim was raised throughout the DFW metroplex and completed her undergraduate studies at the University of Texas at Austin, where she obtained her Bachelor of Science in Nutritional Sciences. She then pursued her optometric education at the University of Houston College of Optometry, graduating Magna Cum Laude with her Doctor of Optometry degree. During her tenure in optometry school, she served as a Teaching Assistant in Primary Optometry Lab and was a member of the Beta Sigma Kappa optometric honor society during all four years of her attendance. Her clinical experience during her fourth-year student rotations included a community clinic in Dallas, TX and a multi-specialty private practice in Austin, TX. After graduation, she furthered her training by completing a residency at the Memphis VA Medical Center, where she specialized in Ocular Disease. Dr. Kim is excited to finally be back home in DFW and serve her local community’s eye care needs. She is a licensed Therapeutic Optometrist and Optometric Glaucoma Specialist. She is also an active member of the American Optometric Association, Texas Optometric Association, and the Tarrant County Optometric Society. In her spare time, Dr. Kim loves traveling, hiking, being outdoors, and spending quality time with family and friends.


Brianna Cottle, CPO

BriannaBrianna was the very first employee at Eyes on Broad. In addition to her years of experience working in the optical industry, she worked for several years as a barista at Starbucks. Her natural gift for talking to people makes her fantastic at helping you find the perfect pair of glasses. She works in the optical, does pre-testing before you see the doctor and helps with the front desk. Brianna is a board-certified paraoptometric.

When she is not working she loves spending time with her Fiancé, Blake and their dogs.

Lizbeth Galvan, CPO

LizebethLizbeth grew up in Dallas and has been in the eyecare industry since 2018. She is fluent in Spanish and English and does a great job at helping you feel comfortable trying on new glasses. Lizbeth is also a board-certified paraoptometric and can be spotted at the front desk or working up patients for Dr. Colston. She graduated from South Grand Prairie High School and has an Associate’s Degree from Mountain View College.

In her free time, she enjoys spending time with her boyfriend Alex, shopping with friends, and watching anime.

Debra Billotto

DebraDebra is from Mitchell, South Dakota! She has 24 years of experience in the optical industry. She makes

Shopping for glasses so much fun! She also does pre-testing and front desk work. She has 5 kids and 5 grandkids.

In her free time, she likes to be in the sun by the water or sitting by a fire pit with family and friends.

Joanne Mai

JoanneJoanne grew up in Mansfield and graduated from Lake Ridge High School in 2018. She is a pre-optometry student majoring in biology at the University of Texas at Arlington. Joanne joined the Eyes on Broad family in October of 2019. She scribes for Dr. Colston and helps at the front desk. In her free time, she enjoys swimming, spending time with her family and catching up on the latest Netflix show!