Derek J. Louie M.Sc., O.D.

Photo of Derek J. Louie, M.Sc., O.D.
Faculty profile

Associate Professor of Ophthalmology School of Medicine

Accepting new patients

4.9 out of 5 (311 Ratings, 105 Comments)


  • Ophthalmology
  • Optometry

Special focus on

  • Contact Lenses (Adult) - Optometry
  • Contact Lenses (Medical)
  • Eye Exams (Adult) - Optometry
  • Optometry


  • B.S., University of British Columbia, Vancouver 1992
  • M.Sc., University of Waterloo, Waterloo 2001
  • O.D., Southern California College of Optometry, Fullerton California 2005
  • Residency:

    • Oklahoma College of Optometry at Northeastern State University in Tahlequah, Oklahoma, 2006
  • Certifications:

    • Fellow, American Academy of Optometry, 2007
    • Diplomate, American Board of Optometry, 2014


Medical contact lenses are used for the visual rehabilitation of irregular corneal surfaces. This irregularity may be due to a medical process such as keratoconus, pellucid marginal degeneration or other disorders of the cornea.  Corneal irregularity may also be due to previous ocular surgery such as LASIK, PRK, or corneal transplantation. Permanent scarring due to trauma, thinning of the cornea, or chronic dry eyes may also cause corneal irregularity.

All of these conditions may benefit from the assessment, adjustment and prescription of a medically necessary contact lens. Soft, gas permeable and hybrid contact lenses (a fusion of both gas permeable and soft lens) may be used separately or in conjunction to provide clearer, more stable vision for patients. Many previously unsuccessful contact lens wearers or patients that previously could not be prescribed contact lenses, or could not tolerate contact lenses may benefit from recent innovations in contact lens designs, manufacturing and materials.

Read more


  • English

Memberships and associations

  • American Academy of Optometry

Patient Ratings

4.9 out of 5 (311 Ratings, 105 Comments)

The patient ratings score is an average of all responses to the question "How likely would you be to recommend this provider to your family and friends (on a scale of 0 to 10)" on our nationally-recognized NRC patient surveys.

Patient Comments

  • Jun 15, 2019

    Dr. Louie and the student were very professional and knowledgeable. Unfortunately, there is nothing to be done about my extensive floater issue. Sigh...

  • Jun 14, 2019

    Always friendly and professional; answers all my questions and addresses any of my concerns; thorough, knowledgeable, considerate.

  • Jun 08, 2019

    Dr. Louie is a very good doctor. He listens well and thinks through the problems I have with my contact lenses and then explains his ideas in a way that I can understand and apply. He always considers the whole of my eye health.

  • Jun 07, 2019

    Dr. Louie was friendly, knowledgeable, kind and expert in his field.

  • Jun 05, 2019

    Prompt, friendly, knowledgeable, answers questions, doesn’t act as if he is rushing through the appointment.

  • Jun 05, 2019

    Dr. Louie is both efficient in his practice and personable.

  • May 31, 2019

    Dr. Louie is wonderful and excellent.

  • May 22, 2019

    Excellent interaction with provider. Provider explained all findings during the exam.

  • May 19, 2019

    Dr. Louie is always very interested and very knowledgeable about anything that is going on with your eyes. He recommended watch my cataracts very carefully, recommended me to a cataract surgeon at Casey, his office made the appointment, set everything up for me. He always does this. I just can't say enough about him, how efficient he is and how kind and understanding and knowledgeable he is about everything. Thank you.

  • May 15, 2019

    I feel the Dr... Louie is very... thoughtful, he's very... detailed in, in information. I like his personality and I've got a very good feedback from him.

  • May 11, 2019

    great professional experience.

  • May 09, 2019

    Dr. Louie is FANTASTIC. Been seeing him for at least 10 years. He is thorough, listens well, and a great eye care provider. My husband is a patient, he fitted my aging Mom (now 91) with scleral lenses which is not easy to do! We drive from Vancouver but he worth the drive!

  • May 02, 2019

    prompt, courteous and thorough...

  • Apr 24, 2019

    Excellent! Very thorough and took time to answer questions.

  • Apr 19, 2019

    Dr. Louie's great. I've been a patient of his for 5 years now and he is amazing. He is concise, easy to talk to, extremely knowledgeable, and he's just a great guy. I couldn't recommend him enough.

  • Apr 12, 2019

    He is professional, warm and I appreciate his expertise with Contact lens management... He’s THE BEST!

  • Apr 12, 2019

    Dr. Louie is so knowledgable and inspires such confidence, that it is such a leaser ande a learning experience to have an appointment with him. I learned important things about my eyes that I never knew before. I am highly impressed.

  • Apr 11, 2019

    Dr. Louie is a very good doctor. It is easy to ask questions and get good answers. He always has a smile for his patients

  • Apr 11, 2019

    Dr Derek Louie is very personable, thorough, and explained everything in a way that I understood completely. I am very grateful to him for helping me with an eye problem that I was beginning to believe was hopeless as two other ophthalmologists were unable to help me.

  • Apr 06, 2019

    He is always professional, friendly, and patient. My son [Name] is a special needs guy. I'm always with him.[Name] Mother.

  • Apr 05, 2019

    we love you guys

  • Mar 22, 2019

    Very warm and friendly. Great listener. Always on time with appointments. extremely competent and through. Explains things in a manner that can be understood. Great followup.

  • Mar 13, 2019

    As always, Dr Louie is extremely professional, efficient, caring and way more than competent. I am very pleased that is he is my "eye doctor".

  • Mar 13, 2019

    Dr. Louie is highly competent, always takes the time to thoroughly answer any questions, does great exams, (the contact fit has always been wonderful) and is on time!! [Name] his staff are also very competent. [Name] a new person in the front had a wonderful personality well suited to meeting people and getting them into their appointment.

  • Mar 12, 2019

    Very pleasant personality, ALWAYS on time, gives understandable explanations.

  • Mar 12, 2019

    Dr. Louie is exceptional. I've been seeing him for years. I trust him completely. Thank you.

  • Mar 08, 2019

    Hi love, Dr. Louie, excellent doctor and I love the intern. I can't remember. The last name. First name was Michael something very good patient report. Absolutely. Excellent.

  • Mar 07, 2019

    I drive eight hours round trip to receive the best medical care for my vision by Dr Louie. He has been my go to optometrist for many years and now that I have moved north I have tried various optometrist located on the Olympic Peninsula and all have failed to live up to the standards of excellence of Dr Louie and Casey Eye Institute.

  • Mar 06, 2019

    Dr. Louie listens very well.

  • Mar 06, 2019

    Dr. Louie is fantastic! He is thoughtful and caring, and also super efficient. I appreciate that his clinic is always on time and I always feel like I get the best care possible.

  • Mar 05, 2019

    knowledgeable, professional, personable

  • Mar 03, 2019

    Efficient but yet provided a thorough exam and excellent refraction.

  • Feb 26, 2019

    Professional in every way - always a pleasure to see Dr. Louie!

  • Feb 24, 2019

    Nice. Prompt

  • Feb 24, 2019

    Always on time, staff and Dr. Louie very polite, very clean office.

  • Feb 10, 2019

    Dr. Louie was very helpful and clear. He listen and give me good advice about the choice that I was about to make regarding the contact lenses, and I was very pleased with his services. Thank you.

  • Feb 07, 2019

    Dr Louie is very professional and very thorough. I have a perfect fit with my Scleral Lenses because of his expertise in his field.

  • Feb 05, 2019

    Dr. Louie is very professional, very knowledgeable and doesn't just guess at my vision issues. He does research and is probably one of the best doctors I've ever seen.

  • Feb 01, 2019

    Dr. Louie is thorough, knowledgeable, communicative, and personable. He spends a good amount of time working with me - doing tests, explaining the outcomes, and discussing my options. He is an asset to OHSU.

  • Jan 25, 2019

    Dr. Louie is on time and very patient and listens well. He keeps up with the latest research and quickly is able to determine a course of action. I feel very confident in him, his knowledge, and his care. Wonderful provider.

  • Jan 13, 2019

    Very pleasant and explained everything thoroughly! Talked directly to my granddaughter and she felt very comfortable. She is a child that is very shy. Would highly recommend this provider.

  • Jan 12, 2019

    Dr. Louie is always thorough, and answers my questions fully. He has helped improve my vision greatly. I rely on his knowledge and skills. I also appreciate that he is kind and patient with me.

  • Jan 11, 2019

    Excellent. Very much on time, to the point, and always has good patient care. Thank you.

  • Jan 10, 2019

    Dr. Louie was extremely knowledgeable and took the time to explain what he was doing and why he was doing it. It was very refreshing and I appreciated the detailed explanations and analogies that he used to help me understand the complex nature of my eye issues. I would highly recommend OHSU for these reasons.

  • Jan 05, 2019

    Dr Louie takes the time to explain and discuss what he sees. I like his thoroughness. Oh, and his timeliness is always nice. He is always on time!

  • Jan 05, 2019

    He is great!

  • Jan 05, 2019

    On time. Kept me informed at every step. Explained the situation in great detail. We mutually discussed options re cataract development and future surgery.

  • Jan 05, 2019

    Friendly professional service.

  • Dec 23, 2018

    Yes, as usual Dr. Louie is exceptional. He's thorough, answers all the questions and is just all around very nice. I'm glad he is my doctor.

  • Dec 22, 2018

    Dr. Louie gives a great eye exam, and is thorough, professional, and friendly.

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