Our Doctors

Dr. Steve

Stephan L. Cassidy, O.D.

Since 1995, Dr. Stephan L. Cassidy has had the privilege of providing eyecare to patients of all ages at Issaquah Vision. He completed his undergraduate degree in Biochemistry at the University of Wyoming in 1990, and earned his Doctor of Optometry at Illinois College of Optometry in 1995.

Dr. Steve has been a clinical investigator for various contact lenses. His professional interests are ocular disease management, contact lenses, and new technologies in eye care. Dr. Cassidy is an active member of the American Optometric Association, Optometric Physicians of Washington, Cornea and Contact Lens section of the American Optometric Association. He is an optometric volunteer at the Millionair club that provides eyecare for the homeless and to the needy.

He enjoys summers in Seattle, being with his wife and twin daughters, loves to golf, ski and fish.

Dr. Walt

Walter V. Cassidy, O.D.

Dr. Walter Cassidy is the founder of Issaquah Vision. Dr. Walt received his undergraduate education at the University of Wyoming and Pacific University. He received his doctorate in Optometry from the Pacific University College of Optometry in 1982. Since 1983, he has been caring for the eyesight of residents of Issaquah and its surrounding communities.

Dr. Cassidy is an active member of the American Optometric Association and the Optometric Physicians of Washington, having served a 3-year term on its Board of Trustees. He is past president of the King County Optometric Society. Dr. Walt is a member of the Kiwanis Club of Issaquah, for which he is a past president. He has served on the parish council of his church, and also has served on the board of Catholic Community Services of the Eastside, as well as the Washington SIDS Foundation.

For the past 20 years, Dr. Cassidy has been a volunteer optometric physician at Seattle’s Millionair Club eye clinic, which provides eye care to the homeless. Dr. Walt is a member of VOSH Northwest, an organization which facilitates free vision care to citizens of impoverished nations. Dr. Cassidy has been a team member of four medical missions to the country of El Salvador.

Dr. Cassidy resides in Issaquah with his wife, Lauren. They have three daughters.

Dr. Erinn

Erinn Tolomei, O.D., M.P.H.

Dr. Erinn Tolomei joined Issaquah Vision in 2015. She received her undergraduate degree from Allegheny College and her Master’s in Public Health from the University of Pittsburgh. Dr. Tolomei earned her Doctorate in Optometry from Southern College of Optometry. Following graduation, she completed a one-year residency in primary eye care at Group Health Cooperative in Seattle. Dr. Tolomei provides comprehensive care to patients of all ages. Her experience has emphasized ocular disease, geriatric care, contact lenses, and pre and post-operative cataract and LASIK care.

Dr. Tolomei is a member of the American Optometric Association and Optometric Physicians of Washington.

Dr. Tolomei grew up in Pennsylvania and now lives in Issaquah with her husband. She enjoys cooking and trying new foods, traveling, the outdoors, and spending time with her husband and two cats.

Dr. Erinn

Tina Schiller, O.D.

Dedicated, enthusiastic, and caring, Dr. Schiller’s passion is helping children and adults achieve their full potential through vision. Dr. Schiller provides eye care for pediatric patients as young as six months old and enjoys working with children and adults of all ages to maximize visual performance. Dr. Schiller received her undergraduate degree in 2009 from The University of Southern California where she graduated Summa Cum Laude. In 2014, she earned her Doctor of Optometry from Southern College of Optometry where she graduated as Valedictorian. Following graduation, Dr. Schiller completed a residency in Pediatrics and Vision Therapy in Memphis, TN.

Dr. Schiller believes in the importance of service, and she has served on five international trips providing eye care and glasses to thousands of patients in Mexico, Colombia, Jamaica, and Belize while also maintaining involvement at home in Special Olympics Opening Eyes. Dr. Schiller is a member of the American Optometric Association, College of Optometrists in Vision Development, and Optometric Physicians of Washington.

Dr. Schiller enjoys hiking, skiing, running, and spending time with her husband and son.