Merina Thomas M.D.

Photo of Merina Thomas, M.D.
Faculty profile

Assistant Professor of Ophthalmology School of Medicine

Accepting new patients

4.8 out of 5 (850 Ratings, 316 Comments)


  • Ophthalmology

Special focus on

  • Retina and Vitreous Disease
  • Retina Surgery


  • B.A., Northwestern University, Evanston Illinois United States 2007
  • M.D., Vanderbilt School of Medicine, Nashville Tennessee United States 2012
  • Internship:

    • General Surgery, Atlanta Medical Center--Atlanta, GA, 2012-2013
  • Residency:

    • Ophthalmology, Illinois Eye and Ear Infirmary, University of Illinois at Chicago--Chicago, IL, 2013-2016
  • Fellowship:

    • Vitreoretinal Surgery, Kellogg Eye Center, University of Michigan--Ann Arbor, MI, 2016-2018
    • Research Fellow, Retina, Wilmer Eye Institute, Johns Hopkins University--Baltimore, MD, 2010-2011
  • Certifications:

    • American Board of Ophthalmology, 2017


Dr. Merina Thomas is a retina specialist. Her clinical interests include age-related macular degeneration, diabetic retinopathy, disease of the retina and vitreous and vitreoretinal surgery.

Dr. Thomas went to medical school at Vanderbilt University, then went on to complete her residency at the Illinois Eye and Ear Infirmary at the University of Illinois and a fellowship in vitreoretinal surgery at the University of Michigan’s Kellogg Eye Center.

An Illinois native, Dr. Thomas enjoys discovering new restaurants, live music performances and traveling with her husband. She is also interested in international ophthalmology, having participated in a medical outreach trip to India in medical school and being named a Unite for Sight Global Impact Fellow selected to provide eye care with their program in Accra, Ghana.

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Patient Ratings

4.8 out of 5 (850 Ratings, 316 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 28, 2019

    Always friendly and accommodating!

  • Dec 23, 2019

    This provider was very thorough. Seemed very confident in the arena in which she was a specialist regarding the retina. I would feel comfortable recommending her to anyone.

  • Dec 22, 2019

    This was a one-day post-surgery visit. Dr. Thomas answered all of my questions and made it clear what the next steps in my recovery would be.

  • Dec 20, 2019

    Love this place . Adore and appreciated Dr. Thomas and her insight , wisdom , comforting words and her hugs and everyone else there is very kind and sensitive and supportive !!

  • Dec 20, 2019

    I'm very pleased it was my service from Dr. Thomas he is extremely cautious very warm and friendly and just answers any of my questions. I'm very happy with her.

  • Dec 19, 2019

    Dr. Thomas was very easy to talk to and explained well.

  • Dec 19, 2019

    Dr Thomas is always a pleasure to be in the same room as she. She is always smiling and very pleasant and the conversation is great. She does not hesitate to fill in the answers before the questions are asked.

  • Dec 19, 2019

    Competent. Friendly let me have plenty of time to ask any questions I might have.

  • Dec 18, 2019

    Friendly, professional and on time. From the Receptionist, Technician and Doctor all performed extremely well and my appointment went quickly and smoothly. My questions were answered very well I am very pleased.

  • Dec 18, 2019

    Dr. Thomas was great as always. I had a medical concern she addressed.

  • Dec 18, 2019

    She is very nice she made me feel comfortable and the shots didn't hurt.

  • Dec 18, 2019

    Dr. Thomas is very kind, very efficient, very professional and the visit was not bad. I ... I ... as much as I like going to a doctor, but it was ... it was an enjoyable visit and I will go back to see her.

  • Dec 18, 2019

    Alright. I thought she was a very good doctor. I'd recommend her to anybody. Press 1. Yeah.

  • Dec 15, 2019

    OHSU could not have made this appointment any easier. Directions to the location were easy, office was running efficiently and on time. The office was clean and quiet. Thank you!!

  • Dec 14, 2019

    I've always been impressed with Dr. Thomas and everyone that I've seen at OHSU and I've always felt relax. They - you can tell they know what they're doing and they're very confident. They're friendly they help us relax, and I can just relax and put myself in their hands, and I'm very grateful. Thank you.

  • Dec 13, 2019

    Dr.s Thomas and Scruggs are simply the best.

  • Dec 13, 2019

    She's an excellent Doctor

  • Dec 12, 2019

    It was a very good experience and she's very we get along really well. She does a good job. Thank you.

  • Dec 09, 2019

    She's really really really good. And I recommend her to anybody and everybody.

  • Dec 08, 2019

    Dr. Thomas is so caring, listens well, explains well, wonderful technique in giving injections.

  • Dec 07, 2019

    I needed to be seen right away and I got in immediately. Dr. Thomas was very thorough in explaining each step of the procedure. Dr. Scruggs operated the laser and I couldn't be happier with the results.

  • Dec 07, 2019

    Hi, I've been very happy with this provider. It's been a pleasure to go to his office and be treated.

  • Dec 06, 2019

    She and the staff at OHSU Portland were very accommodating and professional. The patient is recovering very well.

  • Dec 06, 2019

    Dr Thomas and the staff are very professional and courteous. I’m very pleased with them. The center is very clean. And every one is pleasant.

  • Dec 06, 2019

    Friendly, good explanation , good treatment

  • Dec 04, 2019

    Not not unhappy with Dr. Thomas, but upset that there wasn't enough Ilia for both eyes and had to use of Avastaten in one eye until next time so maybe a little bit more Ilia in the clinic would help.Okay.

  • Dec 04, 2019

    I'm really impressed with all the care I've gotten at both Portland and Longview. And I've been going to Longview, I've been there 3 or 4 times. And they're just as nice as they can be - professional; and they're helping me. My eyes are getting better. So I can't say anything but great about your ... your hospital. Thank you. Bye.

  • Dec 04, 2019

    I got a shot in my left eye because I have macular degeneration, and I've had it for several years. Dr. Thomas, was the second time s0he's treated me and we did not do the shot because it didn't appear I needed it. But I thought she was very professional, very pleasant, very easy to get along with.

  • Nov 30, 2019

    Merina was very pleasant and very thorough with my eye examination, and I would refer her to anybody. Thank you.

  • Nov 28, 2019

    Dr Thomas is an excellent doctor, and the nurses are by far friendly and very knowledgeable.

  • Nov 27, 2019

    My provider was very amiable. She was very pleasant and smiled at me and treated me very kindly.

  • Nov 25, 2019

    She was very good but it was rough when you need to travel like I did and to have them changed 3 different times which meant I had to reschedule time off three different times. But once I was there it was great.

  • Nov 25, 2019

    I was impressed with Dr. Thomas.

  • Nov 23, 2019

    We arrived an hour early thay took us right in I didn't have a appointment with kc eye thay took me right in did my surgery all done thank you so much

  • Nov 23, 2019

    Yes, I would like to tell how well Marina Thomas took care of me. She checked me thoroughly and then she reassured me that at this time I didn't need an operation and she told me of 3 things to watch for in my vision, which is Floaters and flashes of light and a curtain falling upon my vision and so and then I'm going to meet with her in January again and report if any of these things of happened, so how we will go forward with my eye care and I was really happy. She spent a lot of time with me and I appreciated her care and her reassurance. I left the office feeling well cared for and I thank you very much for asking me.

  • Nov 23, 2019

    I'm very happy with. Dr. Thomas, he's very professional. She's very professional doesn't cut corners and she provides most excellent care and I'm sure that that the outcome of anything that I do with her. It would be the best it can possibly be. Thank you very much.

  • Nov 22, 2019

    A good experience. She knows what she is doing.

  • Nov 22, 2019

    Very efficient and knowledgeable.

  • Nov 21, 2019

    Great doctor and staff experience. Very professional and personable at the same time.

  • Nov 21, 2019

    As usual, treated competently and professionally by friendly and caring people. Do wish the time could be constricted a bit. 15 minutes after appointment time before taken in; Over 75 minutes later, finished, with actual face time with providers less than 15 minutes total. There are of course necessary waits to allow numbing medication to take effect, but there's a lot of down time beyond that.

  • Nov 21, 2019

    Both her assistant and she were very pleasant. She explained things about what was going on with my eye using both medical terminology and understandable terminology. I felt she gave a thorough examination.

  • Nov 21, 2019

    My experience was wonderful. The staff are so pleasant and kind. Dr Thomas is a wonderful, kind and compassionate Doctor. I truly enjoy my experience there and would highly recommend them. Can’t say enough about how much I enjoy that office.

  • Nov 21, 2019

    I found Dr. Thomas to be very knowledgeable, a helpful informative, very reassuring, she explain the whole process to me, and what would happen If I don't go through it and why this happens so I found her to be very very competitive competitive competent.

  • Nov 18, 2019

    Dr. Thomas is an amazing healthcare provider, I find her genuine and trustworthy, and she treats me like a human being

  • Nov 16, 2019

    medical was excellent. research was wearisome

  • Nov 13, 2019

    I was called in early which is very important to me as I’m traveling 100 miles one way everyone is polite and very professional and my doctor is the best

  • Nov 10, 2019

    Dr. Merina Thomas was patient, empathetic and understanding. She took the time to explain things to me and made sure she answered any questions.

  • Nov 09, 2019

    Had a great experience. Yeah.

  • Nov 08, 2019

    Dr Thomas and Dr Skruggs have been most kind, conscientious, and professional in caring for my eye issues.

  • Nov 08, 2019

    I'm very happy with the service of Dr. Thomas. She is very friendly seems very knowledgeable about this whole situation and I would rate her an A plus.