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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
  • Eye Examinations
  • Eyeglasses
  • Glaucoma Evaluations
  • Optometry
  • Post Surgical Exams
View all 8 Treatment & Services +

Specialty in Diseases & Conditions

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


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Education & Professional Highlights

Education & Professional Highlights


Education & Fellowships

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

Undergraduate - Bowling Green State University
Bowling Green, OH USA

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 9/20/2021, 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

325 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

35 Patient Comments

Reviewed on Sep 1, 2022

I like Dr. K. He is attentive, caring. Explains what he's doing and why or what he is looking for.

Reviewed on Sep 1, 2022

Dr. Kosunick was very thorough and an excellent teacher! He takes time with his patients which I feel is extremely important.

Reviewed on Aug 4, 2022

My visits with Dr. Kosunik are always excellent. He and all of his staff are outstanding in all ways.

Reviewed on Aug 3, 2022

The doctor listened to my concerns, answered them clearly and even walked over to the big diagram of the eye to explain where/what. Was empathetic when I said I had a brain tumor removed last yr and wondered if that would impact my vision. I couldn't be more pleased with his care, respect, courtesy, and professionalism.

Reviewed on Jul 28, 2022

*Dr. Kosunick listens to my concerns and takes the time to find answers during my visit.

Reviewed on Jul 13, 2022

Very good doctor. He listens and explains very well.

Reviewed on Jun 27, 2022

Dr. Kosunick was excellent. Very professional. Helped schedule me for close follow up. Very kind and caring. Much appreciated.

Reviewed on Jun 1, 2022

Dr Kosunick is very good with me. I have been seeing Dr K since his days with Lakeland Eye Group. I have recommended him to my neighbor here in N Ridgeville,OH

Reviewed on May 27, 2022

Dr Kosunick did thorough look at my eye and determined the issue. He explained the causes and treatment if needed.

Reviewed on May 26, 2022

Dr. Greg Kosunick is a top notch health care provider. I refer others to him regularly.

Reviewed on May 4, 2022

Happy with doctor.

Reviewed on Apr 29, 2022

Wonderful Doctor

Reviewed on Apr 7, 2022

Dr. Kosunick is excellent. I left an ophthalmologist as my "eye doctor" for Kosunick because I observed that his thoroughness and willingness to explain and document Issues was superior to the MD's. I have been very satisfied with the care I have received at each visit. (I should note that I have no serious vision issues, just some related to aging.)

Reviewed on Mar 23, 2022

Dr Kosunik is thorough, and pleasant, I'm very happy with him.

Reviewed on Feb 21, 2022

Dr Kosunick was easy and great to work with and helped me take care of my issue.

Reviewed on Feb 1, 2022

Since moving to the Cleveland area, other than Dr. John Costin, Sr., who did my cataract surgery years ago, I have never felt more confident in any eye doctor I've seen at CC. From my very first appt with Dr.K several years ago, my opinion has not changed. He CARES, listens and explains things so I can understand. He is a blessing to me and an asset to CC.

Reviewed on Jan 20, 2022

Amazingly thorough doctor

Reviewed on Jan 12, 2022

Very good Doctor

Reviewed on Jan 7, 2022

Some of my answers don't reflect the actual very good service provided by Dr. Kosunick.

Reviewed on Jan 7, 2022

Very satisfied with Dr. Kosunick.

Reviewed on Jan 5, 2022

Best eye doctor I found since moving here. He is my third one

Reviewed on Dec 22, 2021

Great doctor and assistance

Reviewed on Dec 20, 2021

Doctor Greg K., was very personable and caring. He explained all my procedures in a way that was clear to me. I thoroughly trust the treatment I receive in his care.

Reviewed on Dec 17, 2021

Excellent Doctor and very good at simplify answers to my questions

Reviewed on Dec 8, 2021

Awesome Doctor

Reviewed on Nov 29, 2021

Would highly recommend dr Kosunick

Reviewed on Nov 29, 2021

Doctor and staff were fantastic

Reviewed on Nov 8, 2021

No change in treatment. I like Dr. Kosunick. He is always polite and professional.

Reviewed on Nov 5, 2021

I wish I could give *Dr. Kosunick a level 6 for excellent. He is so professional and kind. He is a tremendous optometrist! We drove from Parma to see him.

Reviewed on Nov 5, 2021

*Dr. Kosunick and his staff are wonderful. Keep up the good work! Please consider opening an office in Parma.

Reviewed on Oct 29, 2021

Dr. Kosunik is always very thorough and professional. The optician, Kate, was extremely kind and patient with me. She deserves to be commended for her outstanding care.

Reviewed on Oct 28, 2021

My doctor is awesome and I enjoy having him and the service of everyone has been very good I appreciate it thank you

Reviewed on Oct 28, 2021

I've highly recommend Cleveland Clinic especially my doctor

Reviewed on Oct 22, 2021

This appt was made several months ago as a follow up to cataract surgery done by Dr Morley.

Reviewed on Oct 19, 2021

Excellent Dr.

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