Book an Appointment
Qualifications and Experience
Howard S. Kornstein, MD is one of the most experienced refractive surgeons in the Tri-State area and was one of the first New York ophthalmologists to have his own vision corrected with LASIK. Dr. Kornstein graduated from Brown University and Brown University Medical School. After training at Harvard in Internal Medicine, he completed a residency in Ophthalmology at New York University Medical Center. Dr. Kornstein then did an extra fellowship year of subspecialty training at NYU in Cornea and Refractive Surgery. He is board-certified by the American Board of Ophthalmology. Dr. Kornstein serves as Clinical Instructor in Ophthalmology at Mount Sinai School of Medicine and Adjunct Assistant Professor of Ophthalmology at New York Medical College. Dr. Kornstein has performed over 17,000 successful laser vision procedures (LASIK, LASEK, PRK) using the VISX Star S4 excimer laser ****** REGISTRATION FORMS ARE AVAILABLE ON ZOC DOC. PLEASE BRING IT ALONG WITH YOU IF YOU CHOOSE TO FILL IT OUT AHEAD OF TIME.
Verified Patient Reviews
Very quick and efficient examination. It's a small office but Dr. Kornstein got everything in there! I'll be back for annual exam again.
Dr. Kornstein really helped alleviate my fears over a kinda sticky procedure (needle on my eyelid to remove a concretion). It went really well, and now I know what to expect if it comes up again! Def would recommend him.
Professional with a friendly bedside manner, I will return for any opthalmologic needs.
I was traveling and I noticed that my long distance vision had changed. Worried that something bad was happening used zocdoc and got appt next day. I have an optimologist in North Carolina and was in ny at the time. Very impressed with staff and doctor. First rate exam and very thorough. Very confident that I was seeing an outstanding doctor. I would highly recommend doctor and his assistant Michael.
Good bedside manner, and very informative. Easy to make a same day appointment. Thanks Dr Kornstein!
Very professional Doctor. Friendly with his patients and a good listener. I highly recommend this Doctor.
Technology has come so far. This was such a detailed and through exam. Feels like he's been my doctor for years. Highly recommend
Took me quickly, explained everything, didnt try to do any unnecessary tests.
Good bedside manners. Office is a little small.
Don't be deterred by the frou-frou 'day spa' accouterments of Dr. Kornstein's outer waiting area--the doctor's offices double as a medi-spa for laser-related cosmetic treatments, but the small eye exam rooms are purely for ophthalmology/optometry patients. Dr. Kornstein has a kind, solicitous, yet professional demeanor; his exams are both thorough and efficient, and his diagnoses have always been correct. I first made an appointment with him for a scratched cornea, and was so pleased with both the visit and the successful treatment plan that I've continued to see him for my annual optometry exams. I've recommended Dr. Kornstein to several coworkers, and they've all become regular patients--definitely a good endorsement!
Just a note that the suite number is 500B in the SkinBar office, not suite 501 as listed
Dr Kornstein was very sincere and diligent with my problem, he heard me well and spoke with a lot of reassurance and good advise. I would definitely recommend him!
Awesome, quick, thorough. Just and FYI 2 hours after the visit your vision is pretty blurry. It doesn't work as a quick lunch break consultation
Great Doctor, will keep coming back
Dr Kornstein was friendly, professional, attentive, and efficient. He shares an office with Skin Bar, which is small but clean. The hallway looks a uninviting but one shouldn't judge a book by its cover.
Really nice Doctor and very professional
Was really nice and super helpful! the best clinic i've ever been to. Super professional.
Very welcoming and thorough
He was very professional, thorough and attentive. He answered any questions that I had.
Dr. Kornstein was very thorough and had a pleasant bedside manner. I would note that his office is located within a spa so you might initially think you are in the wrong place as I did.
Doctor Kornstein and his staff were all very friendly and made me feel comfortable. I would definitely go back and recommend him to anyone in need of anyone doctor.
Dr. Kornstein is thorough, efficient, personable and knowledgeable - everything you could ask for from a medical professional.
Dr. Kornstein was wonderful! He is very friendly, professional and thorough. I appreciate him seeing me despite my tardiness, due to traffic. His demeanor is pleasant. I felt very comfortable with him. He explained everything. I would highly recommend him.
Seen within seconds of arriving, my case was remembered easily, and a thoroughly pleasant demeanor to boot. Dr Kornstein is excellent.
He is such a caring and professional doctor.
I arrived at the office early, got done with the new-patient paperwork 10 or 15 minutes before the scheduled appoint. Doctor saw me as soon as I was finished. Addressed all my concerns, very helpful, friendly, etc. Would absolutely return if I need an ophthalmologist in the future.
It was not hard to get an appointment and he was thorough and helped with my eye problem.
A professional and kind doctor, who provided quick treatment when I was in a crunch to get back to work.
Dr. Kornstein is extremely knowledgeable and has a great ability to explain issues.
He gave me wrong prescription. My family doc was surprised that he treated me with that kind of prescription.
It's great experience
Dr Kornstein is a pleasant man and as far as I can judge a very professional physician. His office is a little cramped as he shares a space with another company. But this is Manhattan and he accepts my insurance. Overall a good experience.
Dr Howard was very kind, polite and helpful. Highly recommend him !
I was having pain in my left eye and I was very concern. Dr. Kornstein took his time with me and performed several tests on my eyes. He explained everything to me and show me pictures of my eyes. I was very impressed. I appreciated his professionalism.
Dr. Kornstein is an ophthalmologist everyone should visit. He has the patience to go step by step and works with perfection. I would greatly recommend him to all my friends with eye problems
Great visit answered all the questions I had.
He was very friendly and kind - got me in and out quickly. Perfect for what I needed, just a basic eye exam. I would go back!
Highly professional Attention to details Very pleasant manners
I enjoyed my visit with doctor Kornstein, the ladies at the front were very pleasant and the exam itself was very thorough. He took his time in conducting all the required tests, explain my condition and the potential corrective solutions. This was my first visit, but I will be returning to him for my yearly checkup My only con is that it was had to find the office as zoc doc list him as being in suite 501 which is non existent. It took me a while to realize that his office was inside of a bigger office inside of suite 500
Dr Kornstein was professional yet warm and caring. He did a great job diagnosing my problem and prescribing medication to make me feel better. The receptionist was a bit discourteous. She waved her hand dismiss-ably at me when I refused to have my photo taken for their file of me.
On a first time visit for an eye exam and new prescription, Dr. Kornstein appeared to be very competent and had good bedside manner. He did not recommend any additional procedures. He gave me the name of an eyeglass store around the corner only when pressed for a recommendation. I liked him.
Had an excellent eye appointment today! Was very thorough, but also didn't waste my time. If you've been going to eye doctors for as many years as I have you can definitely appreciate that. He also didn't push me on getting Lasik, which I greatly appreciate as that is an issue I've had with doctors in the past.
I've been seeing Dr. Kornstein for three or four years now and he really is the best. The office has changed a bit in the city, since he's only there part time, so even though the receptionist in the office wasn't trained in insurance questions, his main office in white plains called me the next day to follow up. Easy peasy!
Dr Kornstein was great! Very professional and patient. Walked in with unbearable eye pain, and he found the source quickly and treated it.
Great and lovely receptionist at the Long Island office!
Very thorough. Felt very comfortable with his care. Very nice person. His city office is located in a spa, which I found to be hilarious. The receptionists were very pleasant and accommodating.
Can't say enough good things about Dr Kornstein, he was fantastic and I will definitely be coming back for annual checkups. Excellent doctor.
Very professional, seemed genuinly interested in my background.
Dr. Kornstein did a great job explaining things to me me and is very personable. He gave me practical advice and was sensitive to my phobia about having my eyes touched. He was gentle and did a great job helping me. The office staff was great too they offered me water or cucumber water. It's a beautiful waiting room to in the nyc office. Dr. Kornstein and his staff made me very comfortable. I plan to continue seeing him!
Mid-town office is part-time and shared with a skin care place. I almost thought I was in the wrong place. He is efficient, professional and pleasant. He did a careful eye exam.
For starters the office atmosphere was very pleasant. Staff was great, he was great. Was extremely detailed with explaining everything. Finally gave me an answer to my condition that no optical place had done in over 15 yrs. Will definitely continue to be seen by him..
This was my second time seeing Dr. Kornstein, and I left very happy once again. Everyone is so friendly, and they are very thorough with the exam. I'd recommend this office to anyone! I won't be going anywhere else for my eye exams :)
On time, patient and explains problems carefully.
I had a great experience. Dr. Kornstein was very friendly, professional, and knowledgeable. He is now officially my permanent eye doctor.
first appt here and it was great. wasn't a busy time when I came in, so wait was very short, not a long list of forms to fill out, and really had his undivided attention. great bedside manner and did a thorough check of everything related to my eyes. I was very pleased and would go back if i have to.
highly recommended. Dr. Kornstein was on time, friendly and pleasant, thorough and knowledgeable.
So quick, efficient and correct diagnosis for a very painful problem with my eye. Very glad for my visit. Highly recommend Dr. Kornstein.
Some administrative confusion about my appointment time - I saw him in Manhattan, but appointments managed at hisprimary office elsewhere. the doctor was appropriately apologetic; he was extremely competent, friendly, and helpful. I highly recommend him.
I went to him for an annual eye checkup, which he did. He said that he could write a new prescription for glasses, but the change would be very slight. He gave me the option of keeping the glasses I have, which, given the expense, I appreciated. He's a good eye doctor, and gives thorough exams.
Good experience overall.
The doctor has a nice bedside manner and shows true concern for the patient. He does not make you wait, and he does not make you feel rushed during the visit. He is thorough and competent. I highly recommend this doctor. He has many years of experience and a track record of success. You will be glad that you chose this doctor.
excellent doctor! kind, knows his stuff, will not sell you one anything you don't need. he works within skin bar (a little weird but whatever), and he does botox injections. I was all ready to get botox, but he advised I clear it with a neurologist first as very rarely I get trigeminal neuralgia (severe nerve pain on the side of my face). I'll never forget that, I was thankful to see such a doc with strong ethics.
He is thorough, and explains everything carefully. He is both friendly and professional and doesn't rush.
Very through. Great bedside manner. Highly recommended.
Dr. Kornstein, was very thorough and attentive during our meeting.
Dr Kornstein was very professional and attentive. He answered all my questions thoroughly. I trust his diagnosis and recommendations.
Once you get past the fact that the Doctor's office is actually in a Nuvision Skin Spa type place, the visit itself is very pleasant and professional. Dr, Kornstein was very friendly and helpful.
Entirely satisfactory. He understood right away the several issues of concern that I raised and addressed all of them with clear explanations.
Dr. Kornstein was professional, polite and thruough. I highly reccomend him to anyone in need of an eye doc!
Dr. Kornsteim was excellent! He saw me right away. He answered my questions. I will definitely refer him.
I was prepared for the awkwardness of sitting in a spa lobby from prior reviews. I waited less than 10 minutes to be seen and once I was, the service was wonderful.
Strange office. Was obvious he doesn't usually work here and that it was a side office that he uses a few days a week to see patients in the city. Some other person in the office came in to my exam room while I was waiting just to wash his hands in the sink. The doc was nice but I got weird vibes from the place. Well see how things go but I'm a little skeptical to be honest.
Friendly and efficient. I would definitely go back.
Dr Kornstein was very informative and helpful. The staff was great and friendly and I was seen right away.
Very pleasant experience overall. Thank you! JG
Great office environment. Speedy Service. High level of expertise... What more could you ask for?
the office space is very weird
Good doctor who knew what he was doing. He gave good advice and, even though he answered the phone a few times during the visit, to me it is a sign that he is available and very responsive to his patients. I'd go again to see him n the future.
Dr. Kornstein and his assistant, I believe his name was Michael, we both outstanding.I was taken immediately upon entering and filling out new patient paperwork. I came in for a check-up, prescription for my glasses and contact lenses and to discuss Lasik surgery. All of my questions were answered. Although they do not sell glasses frames, they directed me to a place literally down the street where the service was excellent as well. Will definitely be booking future appointments with them!
Great doctor, he re-directed me immediately to an eye cancer ophtalmologist. He took the time to find the right specialist for me and call his office.
Visit went very well. Dr. Kornstein was very professional and courteous.
Professional and very hassle free. It took almost no waiting time for me before I could see the doctor. Highly recommend.
I went to see Dr Kornstein for a regural eye check up after i had my LASIK surgery with another doctor (I got my LASIK done out of town and to avoid the trip again, I saw a doc in the NYC). Overall it was a very short consultation, he asked me to read a few lines and looked at my cornea and answered all my questions. It was an alright experience, nothing that would make a lasting impression. What was nto so goo dwas his office in NYC. He shares his office space with a skin spa (so weird). That itself surprised me, but what really threw me over the edge was that he took me to his examination room, which was on a different floor and that space was also shared with the skin spa - which accomodated a waxing room and some other nasty service, the place smelled so bad an stale. Also there was no one in the office except the doc and me. I was not even sure if it was safe to step into the office. I will not visit him again because his offic espace gave me the creeps
I like Doctor Howard. He is very professional. My eye had a little bump on the cornea and he just got rid of it right away, painless. And this is the first time I examined my eye in USA and he was very patient. He answered all of my questions no matter how silly they were. And he gave me a very thorough eye test and including the back of my weaker left eye. I will go to him for all of my eye problems.
This visit was very good. I would see Dr. Kornstein Again and already have an appointment to do so.
Wonderful. I was seen right away. He had a very assuring bedside manner and made me feel at ease.
Great doctor. Very attentive and answered all of my questions as a new patient. Definitely recommend
I had a great experience with this doctor. Highly recommended. I didn't even know that you can test your eyes in so many ways :) Dr. Kornstein was very nice and made me feel comfortable. He answered all my questions and gave good recommendations. I will definitley come back to see him again.
I was very happy with Dr. Kornstein. The wait time was very reasonable (5-10 minutes) and he was very thorough in diagnosing my issues and answering any questions that I had. Will happily go back to him again!
It was the first time i saw this doctor. I was a little hesitated when i saw his review is less than 5 stars. Wrong! Dr. Kornstein was actually extremely nice and helpful. i only waited 15 minutes before saw him, which is short. I would highly recommend Dr. Kornstein to anyone. I think he deserves a five stars. He seems cares a lot about his patient. I would def come back if i need to see eye doctor again.
45 min wait was too much
Excellent doctor, very friendly and forthcoming, appreciated how fast they moved me thru an eye-exam. Would highly recommend.
Very nice doctor and nice people working behind the front desk. Just wish I didn't have to wait as long as I did.
awesome doctor. super knowledgeable compared to other eye doctors ive been to and extremely thorough....makes sure to answer all your questions! highly reccomended!
He knew immediately what was wrong and prescribed the drops I needed to get better asap. He was very nice and kind. I was in and out of there in a jif, so I was definitely a happy camper.
I saw Dr. Kornstein at the Manhattan location for a pain behind my eye. He was nice and did a thorough examination of my eyes. I would probably go to him again. The office was nice but it looked like it was primary for elective surgeries (lots of age-defying products on display and a mirror hanging over the reception desk stating "Look younger longer!" It was sort of creepy.)
Extremely thorough. I also found him to be very confident in his diagnosis which is of particular importance to me - nothing worse than going to a specialist who will not make any conclusions because they are afraid if being sued for malpractice - I have mad many experiences with this. I highly recommend Dr Kornstein!
Friendly front office staff, nice location, great bedside manner, quick and straight to the point. Excellent.
Fast and professional
Very nice and professional. The environment is very cool, with good music while you wait, modern decor, super sweet receptionists. The doctor took the time, was very professional and made great recommendations. I went for an annual exam.
diagnosed and resolved my problem that I had for months in no time. Excellent!
The office was a little confusing as it seemed to be a laser hair removal place too. His 'exam' room was undergoing renovations and crowded with machines, but he was thorough and explained all he was doing. I don't wear glasses and was just going for a general eye exam.
Office staff was friendly and helpful. Dr. Kornstein was patient and thorough and gave me full attention.
I came in today for a general eye exam with Dr. Kornstein and was pleased with his consultation. He checked the health of my eyes and answered all my questions. The staff was friendly and attentive.
The wait was fairly short. My optometrist advised me to see an MD about possible glaucoma. Dr. Kornstein did a full exam and explained to me all the issues, and allayed my concerns.
The doctor brought me what I needed. He is still the doctor who is the most available and convenient at the moment. He was punctual as usual. He made some good suggestions, which I will try. I will hope for the best.
Absolurely Loved!!!! It's really hard to find an amzing doctor these days. So Glad I found him :)
Very thorough and thoughtful.
So thorough and friendly!
Great visit! Appointment was on time, and Dr. Kornstein gave a thorough exam.
Dr. Kornstein was very professional and thorough. I did not wait long at all. The office is very clean and inviting.
Excellent doctor Patient, knowledgeable, understanding
Saw me pretty much immediately, was very polite, quick and clear.
The doctor is punctual, professional, well-informed, and personal. He definitely cares about his patients.
Detailed-oriented care and clear explanations and discussion. You understand what you have, how to treat it, and you trust him.
He is a wonderful doctor. He is kind and compassionate.
Ok, but I still Have a follow-up in two weeks, I'll wait and see the overall satisfactory.
Go to optometrist for contact lense problems not othomologist.
Dr Kornstein was everything one would expect from a professional doctor. Would highly recommend him.
Very thourough and professional.
Friendly, respectful, relaxed
Love the convenience of the early morning hours.
The staff was professional and the doctor was excetional and thorough.
Attentive, Personable, Thorough.
You can trust Dr. Kornstein even when you have complications with prescriptions that are difficult, such as progressives eyeglass lenses. He will try to help. You can also call him on the phone, as I found out, and he will return your call. He is one of the best trained professionals that I have ever dealt with and I need to have that assurance from his excellent credentials and his fair manner. Once I had a podiatrist make a mistake during surgery (and drop part of his tool in my foot) and I had a dentist "over" reach and charge me over $1,000 needlessly (as I found out later from another dentist who knows him well). I just haven't had always the best experiences with doctors and I need to work with an eye doctor like Dr. Kornstein. In short, you can trust him to be fair and do a thorough job. I am a teacher and I know the difference between getting 95% of the material correct and 89%. You need to have a doctor score in the upper 90s.
The office was totally unorganized and hectic. There were many people waiting to be seen, so many there weren't even enough seats. Dr. Kornstein was very cold and didn't seem to care about my concerns - it appeared he simply wanted me out of there.
Great, fast, and reliable. Answered all my questions and concerns.
The doctor was very apologetic when he found out that my wait took a long time. He asked one of his staff to give me something to make up for my wait. He was very nice to his patients.
This guy is amazing! Very professional and honest. I had a piece of glass in my eye (!) for a few days, he spotted it right away and took it out. Dr. Kronstein - THANK YOU!!
The doctor was excellent. He is very intelligent and knowledgable. I would definitely recommend him and go back for another visit.
Great! Dr. Kornstein and his phasician's assistant performed a thorough exam and clearly explained all procedures from exam through post surgery. I would highly recommend him to anyone who truely care about their eyes. Thanks Doctor!
Doctor was fine. Wait time was not.
The doctor and his staff, including the PA, the receptionist, and the optometrist, are first rate professionals who always help and go that extra yard (which is so rare during these times when everyone is busy). Often the staff of a medical office is abrupt but this staff and doctor are always patient (patient with the patients) and informative.
Excellent! I would highly recommend the doctor. I never have to wait, which is good because I need to make appointments after meeting with the doctor. I can count on him to stay on schedule. This is usually not the case with other doctors who do not value the time of their patients. Definitely go to Howard Kornstein.
Great manner and talented staff.
Great. Did not wait at all. Dr was professional and efficient.
Very professional and to-the-point.
He's got state of the art equipment, a fun swanky office, and he knows what he's doing. PLUS - he takes health insurance! I had a $35 co-pay with my Aetna POS and I love that as, sometimes, since I don't specifically have added on vision, eye doctors don't do accept insurance.
It was a thorough and efficient exam and I was very happy with the visit.
excellent office, great experience, highly recommend this practice!
Great manner, was seen right away and talked through what procedure I will be undertaken by very helpful staff. I really feel comfortable and confident going forward for my LASIK surgery
He was thorough and spot-on with his diagnosis.
Excellent experience, he was a bit late, but refunded my insurance co-pay in apology, which was very nice of him. Excellent care and made me feel very comfortable.
Very professional. Office was immaculate. Staff was really friendly. I wish there were sanitary things for your chin and forehead on the eye machines though. Howver, I asked for a tissue to put there so that was fixed.
Dr. Kornstein is great--easy to talk to, efficient, professional. I'm definitely going back to him.
Outstanding competence. Pleasing manner.
Absolutely fabulous and thorough!
The appointment went really well. I decided to have my kids seen as well. The office is very accommodating.
Excellent job, especially with the drops to test by eyes. The only result was a little blurry vision. With the previous doctor, my eyes went blurry, I lost vision, got sick in the middle of driving with young children in the car. I never went back to the previous doctor, but I will be going back to Dr. Korenstein. The fear that stopped me before is gone.
A positive experience: Dr Kornstein was friendly and reassuring and diagnosed my eye problem quickly.