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 (424 Ratings, 158 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 (424 Ratings, 158 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

  • Dec 11, 2019

    He listened to my concern, then offered options to work with it, and had the various pro/con for how to best move forward.

  • Dec 06, 2019

    Consistently helpful, knowledgeable, competent, & provides info at pt's level of understanding, always willing to answer questions - (even if poorly focused ones!), readily explains exams, findings & plans, never seems rushed or preoccupied, and is always on time for appointments!Deserves a raise!

  • Dec 06, 2019

    Dr. Louie saw me for a very frightening eye injury. He was amazing at communicating the answers to all the questions I had intended to ask. Additionally, while I arrived with a high level stress, his manner quickly made me completely comfortable. He is always great to work with; yesterday's appointment showed me more of his skills.

  • Dec 04, 2019


  • Nov 15, 2019

    Great! Very informative.

  • Nov 07, 2019

    Dr. Loui listened and knew my medical hx before he saw me, which was reassuring. Very friendly. I felt well cared for.

  • Nov 02, 2019

    Dr. Louie, I just he's just I love going to Dr. Louis. He's so professional. He answered every question. I have nothing is a silly question. I certainly will continue to go to him and I highly recommend him.

  • Oct 23, 2019

    My visit with Dr. Louie was carried out very professionally and efficiently including with the staff.Thank you.

  • Oct 20, 2019

    Dr. Louie was great, professional, the whole deal. We me and my wife both really appreciated him, and he was to the fact and and just did a great job. We highly recommend him, you bet. Bye.

  • Oct 18, 2019

    Was well prepared for my individual needs and went through options with clear explanations.

  • Oct 17, 2019

    He is efficient, answers all my questions and instills confidence

  • Oct 17, 2019

    I have always been treated extremely well at the Casey by Dr. Louie and the entire staff too!

  • Oct 15, 2019

    Dr. Louie is competent, efficient, and communicates clearly. It’s worth the drive to see a competent provider.

  • Oct 14, 2019

    He is always thorough, friendly, always answers my questions.

  • Oct 14, 2019

    Always timely, and always very professional, knowledgeable and friendly!

  • Oct 02, 2019

    Dr Louie is a great doctor and is the best lens fit expert I've ever worked. With. I've referred him to two of my coworkers with similar challenges

  • Oct 02, 2019

    Dr. Louie encourages and answers questions and concerns very well. He is a delight!

  • Sep 27, 2019

    He was really great, gave us the all the information, and everything, and was really awesome. Thank you.

  • Sep 26, 2019

    Dr. Louie is knowledgeable, kind & explains what he’s doing.

  • Sep 25, 2019

    Dr. Louie does the best job of anyone getting my prescription right. He answers questions and explains so that I know more when I leave than before. And he has a good sense of humor. I told him I hope he does some teaching of MD’s in training so that he can pass on these skills.

  • Sep 20, 2019

    Dr. Louie is a very kind and compassionate dr. He always takes the time to listen to me and goes above and beyond to answer my questions and alleviate any concerns. I appreciate his thouroughness.

  • Sep 19, 2019

    Yes, Dr. Louie is very good efficient position. He takes time with you and gave explicit directions on how to use medications contacts and so forth. I really appreciate it. I'll be in touch and we'll continue to see him.

  • Sep 18, 2019

    Capable, caring, good listener, cheerful, always on time.

  • Sep 16, 2019

    I find Dr. L. friendly and easy to talk with. To get the most out of a visit, as with any doctor's appointment, I recommend having questions written out on a piece of paper you bring in with you. He's willing to explain everything!

  • Sep 13, 2019

    Dr. Louie is always prompt, professional and kind. He explains things extremely clearly.

  • Sep 12, 2019

    Very pleasant, informative, and congenial.

  • Sep 11, 2019

    Dr Derek Luie is professional and pleasant. Through the years he has treated my condition he has diagnosed my visual problem and provided me with excellent contact lenses. He has amazing skills. I also commend him and his staff for a friendly, professional and timely appointment. I have not had to wait long after I arrive. The time he spends with me is not rushed but it is comfortable and pleasant.

  • Sep 11, 2019

    For meeting once a year Dr. Louie is very well versed on who I am, what I need for what I do for a living. I am sure that means he takes meticulous notes and does not in fact remember those details a full year later. But the attention and conversation means a lot, goes a long way in trust and advice. Thank you.

  • Aug 29, 2019

    Fast ,Friendly, but costly

  • Aug 28, 2019

    He was extremely professional and knowledgeable. He was very helpful in providing easy to understand language and specifically tried to ensure I would have to return for follow up appointments as few times as possible.

  • Aug 26, 2019

    Dr Louie has been my doctor for years. He is thorough and professional, but also extremely personable and caring.

  • Aug 23, 2019

    Well mannered, professional. Will continue to see for treatment

  • Aug 15, 2019

    Derek is great with patients. I appreciate that he runs his clinics on time. He demonstrates that he enjoys his job.

  • Aug 12, 2019

    I found Dr. Louie to be extremely professional, competent, and knowledgeable about his field, and he was also just - had a great manner of speaking to patients.

  • Aug 10, 2019

    Punctual, courteous, very professional,

  • Aug 10, 2019

    Excellent doctor, very efficient and caring.

  • Aug 10, 2019

    He was able to help me take care with my problem.

  • Aug 09, 2019

    I was very happy with 1) the persistence of the system to get me an appointment, 2) the short delay before an actual appointment could be scheduled, 3) the speed with which I was seen on arrival at the clinic, and 4) the professional demeanor of Dr. Louie in the clinic visit.

  • Aug 08, 2019

    Always on time, everyone is pleasant and professional. I feel as though Dr. Louie knows me, my specific issues, and cares to ask questions. He shows respect for patient and coworkers. I always feel very well cared for by Dr. L. and all his associates.

  • Aug 07, 2019

    Quick and Pragmatic,

  • Aug 07, 2019

    Great service, solved longstanding eye issue

  • Aug 03, 2019

    I was able to schedule an appointment promptly, was seen on time, and got my problem resolved.

  • Aug 02, 2019

    Wonderful, fast, and effective.

  • Jul 31, 2019

    always good

  • Jul 26, 2019

    Dr. Louie explained to me the answers to my questions, and told me a couple of things about my eyes that helped me understand my vision problems. I am very grateful!

  • Jul 20, 2019

    Entire experience was excellent from check in staff to provider himself. They are kind, on-time, reassuring.

  • Jul 18, 2019

    Casey Eye Institute is the best. As a patient who has keratoconus since I was 12 I know how extremely difficult it is to not only achieve good vision with contacts but it’s even more difficult to get a comfortable fit. Dr Louie has been able to accomplish both for me, perfect vision and a perfect comfortable fit. He also conducts a comprehensive exam to make sure my eyes are in perfect health. If not for his skills and abilities my daily life would be be negatively impacted.Thank you Dr. Louie!

  • Jul 18, 2019

    It was great.

  • Jul 12, 2019

    I like Dr. Louie. He listens to my concerns and he spent enough time with me and asked if I have any questions, I would highly recommend him.

  • Jul 12, 2019

    Hi, Dr. Derek Louie is great. My whole family goes to see him and we love him. Let's see we find him personable and professional and efficient. He makes us ... makes us feel good about getting quality care and we get in and out in a timely way. So far has not been running late on any appointments that we've gone to. So, we really like him and would highly recommend him to friends or family or whoever. Thank you.

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