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Department Ophthalmology
Primary Location Elyria Family Health Center
Type of Doctor Both Adults and Children & Adolescents
Languages English
Surgeon No
Locations Specialties & Treatments

Treatment & Services

  • Adult Contact Lenses
  • Contact Lenses
  • Diabetic Eye Examinations
  • Emergency Care
  • Eye Examinations
  • Eyeglasses
  • Glaucoma Evaluations
  • Optometry
  • Post Surgical Exams
View all 9 Treatment & Services +

Specialty in Diseases & Conditions

  • 20/20 Vision
  • Aging and Your Eyes
  • Allergic Conjunctivitis
  • Astigmatism
  • Blepharitis
  • Conjunctivitis
  • Diabetic Eye
  • Dry Eyes
  • Eye Infections
  • Eye Inflammations
  • Farsightedness
  • High Blood Pressure (Hypertension)
  • Myopia (Nearsightedness)
  • Ocular Allergies
  • Ocular Health
  • Ocular Injuries
  • Pink Eye
  • Red Eye
  • Refractive Errors
View all 19 Specialties +


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Education & Professional Highlights

Education & Professional Highlights


Education & Fellowships

Medical Education - The Ohio State University College of Optometry
Columbus, OH

Undergraduate - Bowling Green State University
Bowling Green, OH

Specialty Interests

General optometry

Research & Publications

Research & Publications

See publications for Gregory Kosunick, OD.

(Disclaimer: This search is powered by PubMed, a service of the U.S. National Library of Medicine. PubMed is a third-party website with no affiliation with Cleveland Clinic.)

Industry Relationships

Industry Relationships

Cleveland Clinic physicians and scientists may collaborate with the pharmaceutical or medical device industries to help develop medical breakthroughs or provide medical expertise or education. Cleveland Clinic strives to make scientific advances that will benefit patient care and support outside relationships that promise public benefit. In order for the discoveries of Cleveland Clinic physicians' and scientists' laboratories and investigations to benefit the public, these discoveries must be commercialized in partnership with industry. As experts in their fields, Cleveland Clinic physicians and scientists are often sought after by industry to consult, provide expertise and education.

To assure professional and commercial integrity in such matters, Cleveland Clinic maintains a program that reviews these collaborations and, when appropriate, puts measures in place to minimize bias that may result from ties to industry. Cleveland Clinic publicly discloses the names of companies when (i) its physicians/scientists receive $5,000 or more per year (or, in rare cases, equity or stock options) for speaking and consulting, (ii) its physicians/scientists serve as a fiduciary, (iii) its physicians/scientists receive or have the right to receive royalties or (iv) its physicians/ scientists hold any equity interest for the physician's/scientist's role as inventor, discoverer, developer, founder or consultant.* In publicly disclosing this information, Cleveland Clinic tries to provide information as accurately as possible about its physicians' and scientists' connections with industry.

As of 12/28/2023, Dr. Kosunick has reported no financial relationship with industry that is applicable to this listing. In general, patients should feel free to contact their doctor about any of the relationships and how the relationships are overseen by Cleveland Clinic. To learn more about Cleveland Clinic's policies on collaborations with industry and innovation management, go to our Integrity in Innovation page.

Public Health Service-Reportable Financial Conflicts of Interest. Cleveland Clinic scientists and physicians engage in basic, translational and clinical research activities, working to solve health problems, enhance patient care and improve quality of life for patients. Interactions with industry are essential to bringing the researchers' discoveries to the public, but can present the potential for conflicts of interest related to their research activities. Click here to view a listing of instances where Cleveland Clinic has identified a Public Health Service (PHS)-Reportable Financial Conflict of Interest and has put measures in place to ensure that, to the extent possible, the design, conduct and reporting of the research is free from bias.

* Cleveland Clinic physicians and scientists subscribe to the guidance presented in the PhRMA Code on Interactions with Healthcare Professionals and the AdvaMed Code of Ethics on Interactions with Health Care Professionals. As such, gifts of substantial value are generally prohibited.

Patient Satisfaction Reviews

465 Patient Satisfaction Reviews

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our nationally-recognized Press Ganey Patient Satisfaction Survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

Responses are measured on a scale of 1 to 5 with 5 being the best score.

The comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Cleveland Clinic.

Overall Star Ratings
4.9 out of 5
Explains 4.9
Courtesy, Respect & Concern 4.9
Patient Rating of Doctor 4.9

62 Patient Comments

Reviewed on Jun 13, 2024

Recommended 2 neighbors to Dr Kosunick.

Reviewed on Jun 13, 2024

Dr Kosunick is the best- knows his stuff, respectful and easy to talk to

Reviewed on Jun 12, 2024

Dr Kosunick is very professional with a pleasant demeanor/manner He explains terms clearly and understandably. That is what a good doctor does.

Reviewed on Jun 11, 2024

Earliest appointment I could get with Dr Kosunec was more than a week away. I broke my glasses and that's a very long time to wait

Reviewed on Jun 5, 2024

Great experience,no issues, great staff and a wonderful team of Doctors.

Reviewed on Jun 5, 2024

No issues with Dr. He explained my condition to terms I could understand. Very knowledgeable Doctor.

Reviewed on Jun 5, 2024

Great team work. No issues. I have been coming to the C.C on Chestnut commons several years since I moved from Maumee, Ohio. Loved my pcp doctors up that way. I would travel back to Maumee for my appointments after my move to Elyria. Scared I would not fine another truly trusted set of Doctors. I trusted so much. I did and am very happy.

Reviewed on Jun 5, 2024

My eye doctor is very well versed in his craft and I've recommended him to several family and friends

Reviewed on May 16, 2024

I left an MD provider I had used for 10 years for Dr K because he seemed more caring, gave more information, and appeared to be using newer equipment. (It seemed that he was more up to date in his assessment of my vision changes.). I am very satisfied with the treatment I am receiving from him.

Reviewed on Apr 29, 2024

Excellent always explains what is happening what I should expect and when I need to contact him immediately. Very caring doctor

Reviewed on Apr 18, 2024

Doctor was super nice to talk to

Reviewed on Apr 17, 2024

The Whole staff was superior with caring and politeness, and knowledge, as was the doctor, I am very pleased with all of them. Thank you.

Reviewed on Mar 25, 2024

I make my needed appointments right after my annual visit with Dr. Kosunick.

Reviewed on Mar 25, 2024

Dr.Kosunick is VERY thorough and always professional in his eye exam delivery. He is a great listener and encourages questions.

Reviewed on Mar 12, 2024

Dr. Kosunick and the staff are very professional

Reviewed on Mar 12, 2024

Best eye doctor I have ever had! I live >1 mile from the Avon Lake Eye Clinic. They are rude and unhelpful. The doctors will not see you unless you allow them to dilate your eyes which I cannot always do as a working person. I drive the 20 minutes to North Ridgeville just to see Dr. Kosunick. His medical staff is fantastic and so is he!

Reviewed on Mar 8, 2024

Have already recommended /referred several friends to Dr Kosunick

Reviewed on Feb 14, 2024

Good sharp doctor

Reviewed on Feb 14, 2024

Dr. K, is always very polite & takes time to listen.

Reviewed on Feb 6, 2024

The service that I receive was exceptional, the nurse was caring, efficient, very thoughtful and kind. The doctor was amazing. He was kind he was knowledgeable and was a blessing.

Reviewed on Feb 6, 2024

I believe that it is virtually impossible to have a better doctor than Dr. KOSUNEC. I have had nothing but great results from his services and recommendations.Thank you very much

Reviewed on Feb 5, 2024

This Doctor and staff very attentive, professional and efficient. I was treated with courtesy, respect and my Doctor was knowledgeable, very concerned while being a great listener.

Reviewed on Jan 22, 2024

Dr. Kosunack always answers any and all questions and concerns. His exams over the past 8 or 9 years that he has been my optical provider, I have felt that he thoroughly evaluated my eyesight and its condition status

Reviewed on Dec 19, 2023

The doctor was very good and very nice. I liked him.

Reviewed on Dec 18, 2023

Very nice experience with Doctor and assistant. Very caring and proficient.

Reviewed on Dec 14, 2023

Best reception , best nurse , and of course very best doctor ever, so concerned and answering any questions and always ask if any questions .. Plus lets you know how your eyes are doing and advice to help you care for any issues !!!

Reviewed on Dec 6, 2023

My doctor was fantastic, cannot recommend enough. Honestly planning on seeing him probably once every year or two for checkups and surgery consultation (LASIK) once my age is right

Reviewed on Dec 6, 2023

Doctor spent very little time with me and did not discuss any of my concerns. Just completed my exam and told me my eyes were fine

Reviewed on Nov 30, 2023

I was having a problem and Dr Kosunick was able to fit me in his schedule

Reviewed on Nov 30, 2023

I can't say enough good things about Dr Kosunick. He is very knowledgeable but is also ione of the nicest doctors I've ever dealt with. He explains everything, always makes sure I understand, and answers any questions. I never feel rushed. Dr Kosunick truly cares about his patients.

Reviewed on Nov 29, 2023

I recommended him my family and friends and my entire family goes to him. He explains everything and has a genuine concern for my health.

Reviewed on Nov 29, 2023

Always good to see Dr Kucinick.

Reviewed on Nov 29, 2023

Doctor and his assistants were great

Reviewed on Nov 22, 2023

Dr. Kosunick is always very thorough and kind. Explains everything and always answers my questions.

Reviewed on Nov 22, 2023

It is always a pleasure see Dr Kosunick. He is very personable and attentive to my eye health. Willing to take time with me should I need an explanation or to discuss other options/needs. Always look forward to our appointment.

Reviewed on Nov 21, 2023

I always have a wonderful experience with Dr. Kousnick. His expertise really shined when I asked him the questions. When he diagnosed the problem, not only is he crystally clear, but also right on the issue. I am so grateful that I have had him as my eye doctor.

Reviewed on Nov 21, 2023

I feel Dr.Kosunick knows me and my eye issues. He knows I do follow his guidance to help myself with eye drops and warm eye compresses nightly.

Reviewed on Nov 10, 2023

This Dr is always great

Reviewed on Nov 9, 2023

He was here easy to understand in explaining what was going wrong with my eye now It has been a long journey with many doctors he is one of the best I have had

Reviewed on Nov 8, 2023

Dr. Gregory was very helpful, and helped me feel at ease regarding my treatment

Reviewed on Nov 7, 2023

Dr.K. Was courteous, thorough & a pleasure.He wears his profession well & compliments your Hospital System.

Reviewed on Oct 26, 2023

Dr Kozynick and his assistant are exceptional!

Reviewed on Oct 25, 2023

Both Robert and my provider were outstanding. Best ever experience with eye drops and my provider explained everything to me.

Reviewed on Oct 18, 2023

Wonderful doctor & staff. Always efficient.

Reviewed on Oct 18, 2023

Doctor investigated a concern immediately.

Reviewed on Oct 17, 2023

I have had this Doctor for mean, mean years. Like him very much. I have no intentions of changing.

Reviewed on Sep 21, 2023

He told me something that I never knew about my diabetes. He was very concerned about my A1C and told me what could happen if I dont take care of myself. I told him I am working on my A1C. He answered my questions with concern. I really like this doctor. He is thorough and I can tell that he cares.

Reviewed on Sep 20, 2023

Dr Kosunck is a very good doctor and I would highly recommend him.

Reviewed on Sep 19, 2023

Great doctor!

Reviewed on Sep 6, 2023

I like Dr kosunick. Very thorough, explains thing. Very easy to talk to. I trust he's good care of me.

Reviewed on Sep 5, 2023

Dr. Was gracious and saw me even aftrr I was 10 minutes late. I appreciated not having to reschedule

Reviewed on Sep 5, 2023

Oh I always have had positive experience with my Doctor. I appreciate the respectful manner in which he has treated me.

Reviewed on Aug 31, 2023

Doctor did a good job!

Reviewed on Aug 23, 2023

Dr Kosunick is very thorough. He explains any issues and concerns in an easy to understand way.

Reviewed on Aug 18, 2023

Dr Kostinck is the best

Reviewed on Aug 18, 2023

Dr. Kosunick he is a very good at listening and find problems with his patients. Thank goodness

Reviewed on Aug 17, 2023

Dr. Greg does a thorough job and answers all my questions.

Reviewed on Aug 8, 2023

My experience with the Doctor was very helpful and he is a very nice person.

Reviewed on Jul 31, 2023

Always a good experience with Dr. Greg. He is very informative, and answers all of my questions. He is helping me with my future needs as well. Terrific Doctor!

Reviewed on Jul 31, 2023

I have, and will continue to recommend Dr. Greg to anyone I meet who might be looking for a good Doctor.

Reviewed on Jul 14, 2023

Dr is excellent at his job and nice person

Reviewed on Jul 11, 2023

Very thorough and detail. He is a very good doctor

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