Welcome to

Issaquah Vision

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About Us

Issaquah Vision Office Photos June 2016 071

Standing – Dr. Steve, Melissa, Mikelle, Debbie, Dr. Erinn, Karla, Olga, Jakob, Erica, Dr. Walt
Kneeling – Tracy, Christa, Susie
Not Pictured – Bettina, Blumi, Joanne

Mission Statement

At Issaquah Vision, PS, our purpose is to give our patients the highest quality of care. We are committed to providing individualized eye care in a personalized, friendly manner.

Get to know

Our Doctors


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 […]

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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 […]

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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 […]

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Our Staff

Technicians: Susie, Tracy and Bettina


Administration: Karla, Debbie, Christa, Mikelle and Melissa


Opticians: Jakob, Olga, Tracy and Erica.


Browse our eyewear



Designer Eyewear


Contact Lenses

Our goal in contact lens fitting is to provide you with lenses that give you clear and comfortable vision, are safe, are easy to use and acquire. With the vast array of contact lenses on the market, who you select to obtain them does make a difference between reaching this goal and not.

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Contact Lens Types

Soft Lenses: Soft or hydrogel lenses are soft lenses that are made of water containing plastics. Hydrogel lens materials have varying degrees of oxygen permeability. Newer silicone hydrogel materials allow even more oxygen to pass through these lenses, reducing the risk for chronic oxygen deprivation of the cornea.

Soft contact lenses are larger than the diameter of the cornea, draping […]

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Frequently Asked Questions

Where do I start?

As part of our goal of providing our patients with clear, comfortable and healthy vision, we feel that it is important to have your eyes thoroughly examined within 6 months of your contact lens fitting. A contact lens fitting can be scheduled at the same time as your eye examination, or as a separate appointment with […]

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Spectacle Lenses

We invite you to experience the standard we set in Issaquah for expertise and selection in ophthalmic lenses. Each of our opticians personally tests advancements in lens brands and features for meaningful innovations that best suit your expectations of lens functionality, and durability.

Anti-reflective: (AR) coatings improve your vision by significantly reducing annoying reflections on the surface of your lenses. […]

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Low Vision Care

Low vision care may be of interest to you if you have difficulty with the following tasks, even with your glasses: reading newspapers, price tags, magazines, menus, medicine bottles, or books, recognizing faces or even watching TV. In addition, if you have macular degeneration, glaucoma, diabetic retinopathy, or other ocular diseases leading to vision loss, low vision care may be […]

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Order Contact Lenses

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Comprehensive Eye Examinations

At Issaquah Vision, we believe that a thorough eye examination is much more than the test for glasses and contacts. We thoroughly evaluate the function and integrity of your eyes, as well as the health of your visual system for potentially sight-threatening conditions. Diabetes and Hypertension are just two systemic conditions that left unchecked can cause significant damage to the […]

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Specialty Contact Lens Fitting

With over 40 years combined of successful contact lens fitting, we offer comprehensive contact lens care and availability as part of our contact lens services. Our extensive contact lens experience allows us specialize in astigmatism, multifocal, rigid gas permeable, orthokeratology and other hard to fit contact lenses. Of course, we also love to fit the routine daily and extended wear […]

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Ocular Disease Treatment and Management

As part of our goal to provide personalized and comprehensive vision care, Dr. Walter, Dr. Steve and Dr Erinn have been trained and licensed in advanced optometric care to manage and treat most ocular and lid diseases. We also work together with your primary care physician to keep them informed of your ocular health status. At Issaquah Vision, we manage […]

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Dry Eye Treatment

As simple as “dry eyes“ may seem, this condition is a common complaint that ranges in severity from subtle but chronic irritation to the inability to keep the eyes comfortably open. Causes of dry eyes may be complicated and multifactorial, ranging from poor contact lens hygiene, menopause, autoimmune disease associated with rheumatologic disorders, and a host of other factors. Over-the-counter […]

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Educational Videos

Rendia is a 3-D software solution that will help educate and entertain patients and staff with a variety video animations.

View Video

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Patient Center

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Office Forms

Download Forms

Prior to your visit to our office, please fill out the appropriate forms below (click on icons to download). All forms are in PDF format.

Please contact us if you have any questions.

Patient Registration Form

Contact Lens Exam Form

This form is only applicable to those patients who wear contacts now, and are scheduled for a ‘Comprehensive Eye Exam with a Contact Lens Evaluation’.

Optomap Form

Please fill out this form if we request authorization for consent to use Optomap.

Financial Policy Form


Helpful Resources

General Eye Health Information

  • General Information Website
  • National Eye Institute
  • Optometric Physicians of Washington

Age Related Macular Degeneration


  • National Eye Institute
  • Pacific Cataract and Laser Institute

Computer Vision

  • General Information Website
  • Optometric Physicians of Washington


  • National Eye Institute
  • Prevent Blindness America
 Low Vision Care

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