Physician, Professor
Ophthalmology - Glaucoma, Ophthalmology
Department: Ophthalmology
I am a board-certified ophthalmologist specializing in glaucoma at The Ohio State University Wexner Medical Center. I provide medical and surgical care for patients with glaucoma and other complex eye conditions. My patients can rely on me for high quality, compassionate care and honest communication in every encounter.
I collaborate with a multidisciplinary team of skilled experts to ensure each patient receives personalized care tailored to their unique needs and values. In addition to my clinical responsibilities, I am passionate about educating and mentoring the next generation of providers.
I am a clinical professor of Ophthalmology and Visual Sciences at The Ohio State University College of Medicine.
Please note: Not all physicians schedule patients at each listed location.
The overall patient satisfaction rating is an average of all patient responses to the six doctor communication related questions shown below from the Clinician and Group Consumer Assessment of Healthcare Providers and Systems survey. For additional information about the patient satisfaction survey, please visit our Patient Satisfaction Survey page.
The comments are submitted by patients and reflect their view and opinions. The comments are not endorsed by and do not necessarily reflect the views of Ohio State Wexner Medical Center.
At The Ohio State University Wexner Medical Center, we support a faculty member’s research and consulting in collaboration with medical device, research and/or drug companies because a faculty member’s expertise can guide important advancements in the practice of medicine and improve patient care. In order to provide effective management of these relationships, the University requires annual disclosures from all faculty members with external interests related to their University responsibilities.
As of 11/3/2025, Mark Slabaugh has reported no relationships with companies or entities.
We adore Dr Slabaugh
He was efficient and kind. He is very professional and reassuring.
All good
Very good
All good
Very professional, smart and good communication. He did the tests and we talked about future step
Dr Slaubaugh listens and engages in conversation about my eyes.
I felt like he really cared about me and me eye issues
Very friendly, welcoming, helpful and efficient.
Very friendly and professional.
Everything was great.
Exceptional
Very courteous and professional and puts you at ease
Deepest concern about my health
Muy buena
Professional and friendly!
I wanted a second opinion on my eye diagnosis. Dr Slabaugh was so very patient, kind & thoroughly explained my eye condition & symptoms. His diagnosis & reassurance was so helpful in easing my mind that my eyes would be fine.
Knowledgeable and reassuring, listened to my concerns
Good clerks courteous
Dr. Slaybaugh is always a pleasure to see!
Dr. Mark is a caring individual. I asked a few questions regarding eye drops and routine appointments as I have a long standing one at OSU Ophthalmology Clinic @ the Main Campus every six months.
Again, Dr. Slabaugh (sorry if I've misspellt his name) never seemed as though he was in a hurry to get me out of there. That means a lot to me (and most likely to all the other patients he sees).
Good
Kind, polite and answered concerns I had.
Further evaluation and assessment eye pressures and prescriptions for glasses explaining why I needed them and assessing for the dryness
Top notch
He listened and correct problem
Wonderful
Caring. Comfortable. Thoughtful. Respectful
Both nurse s and Dr had my medical history reviewed and had excellent bedside manners
They were good
Pleasant & professional
Good
Good
He always chats about how I am doing and listens before he goes in tomesicalmissues
Very laid back and easy to talk to
Friendly, knowledgeable.
He was a good listener; also responded to my questions.
Phone call the following day
Excellent
Okay I guess
Very good very
Professional attentive care was provided
Very kind and approachable. A good listener and explained the path forward for my care.
Excellent Job
Excellent doctor.Answered all questions & explained thoroughly what he was doing & why.
Dr. Slabaugh always makes me feel well cared for and in excellent hands.
We love Dr. SlabaughHad thought no one could replace Dr. Kapotansky but he is as good.
Professional and courteous
Great physician knowledgable listened
On a scale of 0 to ten,he is a twelve
Really good,patient
Very good
He is fantastic! Professional & personable. Great "bed-side" manner always.
Dr. Slabaugh and office are excellent providers delivering the best service and treatment from the moment I stepped into the reception area to the minute I left
Excellent
Good
Goodlh
Doctor Slabough is very professional, patient and proficient in his duties. He's approachable and good at explaining the medical condition to the patient.
Good and spent time talking with me about any concerns I may have.
Very friendly, courteous and thorough
Good
Dr.Sleighbaugh always take the time to explain to me the results of the tests and what my situation is. He is very professional.
Very professional and always kind and caring
He is so cute and treats me with respect and explains everything clearly.
Very affable, caring, respectful, and demonstrated commitment to attend to my health issue
He was very thorough explaining my condition of my eyes.
The doctor was patient and professional. He was a pleasure to talk to about my condition. He was concerned that I understood my condition and possible prognosis.
Very good
All good
Caring
Understanding and professional.
Good
He is a good provider, I feel staff failed to inform him about my presence.
Very professional
Great
Mark Slabaugh is the best. He is thoughtful and thorough. He speaks to me and not at me. He's mellow. He's humorous, too. This dude is always in a good mood when I see him. He is the kind of guy you'd like as your friend or your neighbor.
The doctor was very kind & took lots of time with me. My husband has seen him for years & recommended him to me.
All good
Dr Slabaugh is an excellent physician and his treatment has proven very effective
Very professional and informative.
Doctor was unable to diagnose why eyelids are swollen and itch. Quickly dismissed the issue. Noted my farsighted was extreme and recommended cataract surgery. Was surprised since he was unable to diagnose current issue but recommended surgery for something else. If he couldn't and did not even try to diagnose current Issue how did he believe I would be ok for cataract surgery?
I trust my provider fully with the care that I receive.
This was my first visit with this provider. He listened to my history and suggested a new solution to my problem.
Dr. Slaybaugh has a very good chair side manner. He is very knowledgeable and in parts that knowledge to the patients. However, the computer was down in the room that I saw him in and I'm not sure that he was able to take a clear look at the pictures that were taken of my eyes and this concerns me.
Nice and help. Very good and explain things really well.
Every thing was good and caring
Provider has great and professional advice for my issues and so far he is right on target.
Excellent care
Very good experience
Dr. Slaybaugh answered my questions and explained everything I wanted to know. My experiences with him are always very positive.
Clear description of my problem and what to do about it
Good
Dr. Slabaugh is a highly competent physician who Consistently as provided top quality Advice andservice to me
Dr. Slabough is a very good friendly Dr. I would refer him to family and friends.
Good
Good very knowledgeable
He depended on the previous health care professional's records and did NOT do his own medical history of me. Because of this, I am concerned he was unaware of several preexisting issues in my health that he might have evaluated differently if he had known about them
He took the time to sit down and talk about concerns.
Always courteous and caring
He is very concerned about my condition Discussed further needs and concerns
They were all working together to help me my procedure!
Dr. Slabaugh is a very good listener. He explains what I need to know.
Excellent
He's a great physician.
Caring and professional
I really like him
The best doctor ever! He save my art career, I was just about to quit when he proceeded to remove cataracts and stop glaucoma
Good
All of osu show great concern for their patients and make sure that their needs are met
Efficient and professional with personality
I appreciate his concern over providing the best eye care possible considering my injury.
Dr Schlabaugh is fantastic. Very thorough and very patient.
Consistently professional
Very knowledgeable, courteous, patient. The best ever!
Good
No complaints
Everything is fine
Doctor was very good.
Nothing bad
Dr came and talked to me, explained that there was no change and set me up for a follow up in a year.
He listens,reviews my chart, and and cares
Astonishing terrific
I am very happy
Friendly and put me at ease
Very attentive. Answered my questions respectfully.
I came in with concerns of binocular vision dysfunction and he didnt even check me for it because I dont have double vision, but double vision is an uncommon symptom and so shouldn't rule BVD out. He didnt go through typical symptoms to see how many I had. Now I have to find another provider that will actually check me for the thing I spent hours driving to my appointment for.
Professional and informative
Addresses my questions clearly and in detail.
Quite patient. Maintained eye contact
He is super nice he even noticed that after my surgery I was retuning to my normal self
Dr.Slabaugh is FABULOUS! I have referred him to my hubby and a few people I know.
Dr. Slabaugh is one of my favorite providers. I have a good team providing care for me!
Very respectful thank you so much
Very good
He is always very personable, which is nice
He is very proficient and always asks about my condition
Very good.
Excellent experience
All good
He gave me options for my health problems and assisted me to pick the best option for me,
All good
Dr. SLABAUGH is great!
He good I like him!
Great
Knowledge about my condition, concerned provider, friendly
The provider I never have a trouble with they always try to help whenever they can
Good
He was excellent. Better than I expected. I felt very comfortable and happy for my choice.
My provider was great you broke everything down to where I can understand what's going on he was very patient and caring
Knowledgeable. Breath smelled.
Good
Good
Excellent Doctor
Exceptional
Always reassuring and an unhurried experience with Dr Slabaugh
Very caring
Very good information provided.
Very good
Attentive, helpful, and professional.
He is always great taking care of me.
I have been seeing Dr. Slabaugh since 2015. He and the staff always get back to me quickly, or get me in if I have a pressing issue. I would nominate Dr. Slabaugh to be recognized for his excellent care for patients.
Caring and concerned.
Knowledgeable and informative
VERY PATIENT WITH MY SON
He always comes to the exam room with a friendly smile and a welcoming extended hand. I feel he has either talked and/or read the results from tests performed by the technicians because he always checks my eyes again before scheduling my next appointment. He maintains great eye contact and is personable; you are not a number.
Efficient and knowledgeable
Excellent
Good
Verygood
Good
Very good.
Good
I am very happy with Dr. Slabaugh. He is easy to talk to and very supportive .
Seems very concerned about my eye health. Explained everything clearly.
Very nice
Friendly & informative
Dr slabaugh is one of the nicest doctors I've dealt with over the past 13 years, he treats you like a person and not a number.
Dr Slabaugh Is always very focused in on my concerns when he is with me. I do not feel rushed in anyway, and I feel very confident that he is taking good care of me.
Near perfect
No bad experience with my dr ,he is also friendly and knowledgeable and let me know how my eyes were
The doctor was great he looked forward to seeing him again
He was very informative and genuinely showed concern for my condition.
Experienced, knowledgeable and knew his field
He saved my eyes. I was extremely lucky to have him as a provider. He is calm, friendly and honest and sincere
Very personable, knowledgeable, spent more than adequate time with me
Very good
Friendly, professional and took great care of me
My care provider is excellent
Good
Very personable and explains things well!
Great
Provider is the best!
Very well
He is excellent
Dr. Slaybaugh was able to fix the problem at this visit so I did not have to come back.
Always a great experience.
The provider was very professional and explained things clearly,
Always good experience
Outstanding
Excellent. Friendly and reliable.
He is a wonderful man
He was cool
He was very knowledgeable but he did not take my concern about my double vision seriously.He mentioned what might be next steps, but he did not ask for me to follow up with him. I felt like I was bothering him/ wasting his time and left feeling embarrassed that I had bothered me especially when he suggested I ask my daughter ( a neurologist) for her opinion about my double vision and try to stop tilting my head which might be causing the problem. He has not posted any notes on my visit ( four days ago) which tells me he was not really taking me seriously. My husband met with another OSU ophthalmologist with a different outcome and overall feeling. His doctor posted notes within hours of the visit.
Very friendly, competent, and knowledgable
All good.
Good
The best there is
Good
I really liked Dr. Slabaugh! But this being my first introduction to Havner, I was somewhat anxious my ability to make sense to him! I forgot to ask about a few things. . .
He is very nice and knowledgeable about his profession. He is always eager to find out how I'm doing.
Very nice, knowledgable, helpful, answered all my questions and explained things very well.
Informative, spent time with me, answered wuestions
Good
Very good
Dr. Slabaugh is simply wonderful! Always professional and thoughtful. It's a better experience than speaking with most of my brothers.
Good
Was good
Dr. Slabaugh is the best. He explains things clearly, communicates that he cares about my well-being and the post-surgical progress of my eye. He's personable. I can't imagine that there is a better all-around eye surgeon and care provider. He really understands what excellent care entails.
Thoughtful, very present and attentive to my concurrent medical needs and questions I had about living with the array of them.
Excellent care
He was nice.
I was very comfortable with him.Thank you, Dr.
Very friendly, polite, and professional.
He is the best! We drive 2 hours just to have a conversation and check up
A great experience overall!
All good all good
Dr. Slabaugh was simply exceptional. Very caring and compassionate. It was my annual exam, he reviewed my case and answered all my questions. Very lucky to have him as my doctor.
Dr Slaybaugh is a wonderful ophthalmologist. Highly recommend.
Very good
I would recommend this doctor to any one. He didn't rush into conclusions about my condition. He probably was the most understanding explaining doctor I ever had.
Professional and respectful when responding to my questions and concerns.
I don't have bad experience.Everything was good.
Very Professional.
Dr. Slaybaugh was very likable, and matter of fact; he did not give me any false hopes.
Excellent
Dr S is exactly why we come to OSU
Very good
Dr Slabaugh is an excellent physician
Professional, friendly, spoke a little fast but explained everything very clear and simple. I felt very cared for.
Dr. Slaybaugh is always smiling and in a good mood. He is a great doctor.
I'm glad to have found Dr. Slabaugh.
Exam comfortable and good
He has been excellent. He gives attention and cares deeply about me
Always shows concern for his patients and very thorough and skilled with medical diagnosis
The best
He was a good listener. Knows what he is talking about and ecplains things well.
Very good
Friendly and knowledgeable
I never had a bad experience ever always had a good one so I think he's very courteous in that and he's a kind doctor and we really appreciate them okay thank you
Dr. Slabaugh and his team were very courteous and professional. They took the time to answer all questions about my eye health and cataract surgery. I am so glad I chose them to address my cataracts and surgery.
Very knowledgeable, and made me feel at ease.
Very good listener .
He is excellent. He describes what is going on and shows concern. He is interested in me as a person.
My team gave me peace of mind
Excellent I am more than grateful for your attentions
Efficient, clear, direct, good listener, explained things easily.
Outstanding
Great everything
He was friendly, caring, and efficient. He clearly explained the situation and expectations for the future.
Dr Slabaugh has saved my sight. He is wonderful.
Very pleasant and knowledgeable
Excellent care
Super nice, and easy going, confident, and experienced.
Very concerned
Very caring, listened to my concerns and provided care needed. Took time to explain in simple terms
Patient, understanding, respectful
Dr. Slabaugh is excellent.
Friendly, knowledgeable and helpful
Good
As a long time patient I appreciate all my doctor 's care.
I would rate Dr. Slabaugh as high or better than any doctor that I have had in the past.
Seemed knowledgeable and helpful, also personable
I felt rushed.
He was fine and quick and thorough.
He is amazing. I appreciate him and more importantly, trust him.
The doctor listened to my concern about having constant dry eyes and addressed the issue without hesitation. The doctor is very professional and thorough. I am glad he is my eye doctor.
I'm very satisfied to have Dr. Slabaugh for my doctor
He informed me what type of problem what it needed
Answered all my questions. I did not feel rushed. Very courteous and friendly. Very intelligent and professional.
Good
All went well
Dr. Slabaugh, is a very caring doctor! He explains everything in detail or what I call layman terms. He always addresses every one with Mr or Mrs. He never seems rushed to see the next patient. He takes all the time needed to go over each detail,
Good listener and explains his thoughts for my medical care well.
He was very nice.
Kind, compassionate
Excellent Care
Everything good
Agood e penitence for eye care..
I felt the Doctor was in a hurry
Made sure everything looked good before ending appointment
Received answers to questions, made recommendations, could follow up as necessary.
Doctor was very friendly and professional
Knowledgeable
Good experience
Professional and good
Mark was very thorough and answered all my questions
Excellent service
Drove 90 miles to see him. Top level care provider.
Dr.slaybaugh is an excellent provider
Good
Very good care. Office is always packed.
Quick analysis of my concern about my shingles, which was right on about what happened.
Very positive about removing the cataract in my left eye
Checked vision, explained procedure well
Friendly, respectful and professional
He is very gentle and willing to respond questions; however, he just spent about 5-7 minutes after almost half an hour waiting in the exam room.
No bad experiences
Knowledgeable and confident
The nurses/staff in the pre-op area were exceptional!!
He is FAN-TAB-U-LOUS! Dr.Slabaugh is friendly, caring & professional with an exemplary "chair-side manner".
Excellent service
Excellent. Caring
Very positive experience. Always listens, answers any questions and just a pleasant person. Never feel rushed.
He was great at describing my dry eyes and inflammation, and how we are going to treat my problems.
Offers the best of care and very knowledgeable with information that will take care of the patients need and care
It was my first visit with him and he was wonderful. Very helpful and caring.
I very much appreciate his concern for helping me to achieve the best eye sight possible following an eye injury.
Dr Kuennen, Dr. Slaybaugh and Dr. Mundy are GREAT -always a good visit.
Listens and answers my quesrions
Dr. Slabaugh is excellent providing tests reports and plan of care in patient, friendly manner
Make sure I understood what was happening about my health.
Very kind, easy to talk to, doesn't seem rushedev
My physician was 100% aware of my previous medical history. Excellent, confident listener.
Excelente
Very good
I only have great things to say about Dr. Slaugbaugh. He us understand , Knowledgeable, very easy to talk to, and makes me feel comfortable. He always remembers me , with all the Patience he has, that's impressive.
The optho was very helpful, friendly and thorough, as always.
Dr. Slabaugh is very thorough and explains everything well. He is an excellent listener too!
He came in with a resident and introduced him. He examined my eyes and described what he saw. He said there were a few changes and to schedule another annual exam. He remembered what I did professionally and asked how I was doing.
Very good
Dr. Slabaugh is the best.
Good
Very good.
Very thorough
Very competentanswers questions thoroughly.Actively listens & responds accordingly.
Excellant
I feel a very good job was done with me
He's top notch in his field, I'm vary pleased with him..
The care I get at OSU is one of the best I tell everybody that is the only place I've ever go to
I have been very happy with my doctor and his staff.
The best. Listens, explains any concerns.
Provider was professional,very caring,explained things clearly and went above and beyond to help us.
I said in my last 5 years experience second best doctor Really thank you sir
Always good work
Dr Slabaugh is our hero. We drive 2 hours one way every visit to see him. Best bedside manner on the planet.
Very good
Very Good provider
Answered questions
Dr Slabaugh was excellent proficient yet caring
He was expert, efficient, friendly, and kind.
Friendly, concerned, and professional.
He Always treats you right and is friendly
Outstanding. He knows my medical and eye history very well. He is also the one who did my cataract surgery in 2018.
The doctor does seem to listen to my concerns and give explanations. I never feel that he is timing my visit or trying to rush me out of the office.
Dr. Slabaugh is great!
Professional, friendly and had obviously familiarized himself with my history
I have nothing bad to say. I feel like the care I get a the Wexner Medical Center is good care. It reminds me of the care I get with the Veterans Administration.
He was direct and professional, but not intimidating.
I have found Dr. Slabaugh to be excellent and engaging at every appointment. Very personable and attentiveI do not easily place confidence in all medical staffers at various offices and clinics, however, I do in Dr. Slabaugh !
Professional, serious,concerned & friendly.
My Eye Doctor is the best,he just fantastic
Very professional
Dr. Slabaugh has saved my sight. He's the best.
Knowledgeable, professional and prompt
Very thorough and competent.
Aware of other health concerns and proactive
Good
Good
Great!
My doctor was always smiling, had a great attitude and easy to talk to during my visit
All good
He is fabulous! Caring, courteous & concerned. Explains thoroughly, answers questions & I always know he has my best interests in his care.
Really enjoyed meeting Dr. Slabaugh. Very thorough, courteous and professional. Feel very confident with him