Dr. John J. Dagianis, M.D.

Expert Publications

• Effect of prior cataract surgery on the long-term outcome of selective laser trabeculoplasty.
• Effect of central corneal thickness on the long-term outcome of selective laser trabeculoplasty as primary treatment for ocular hypertension and primary open-angle glaucoma.

Media Releases

Get to know Ophthalmologist Dr. John J. Dagianis, who serves patients in Nashua, New Hampshire. 

Dr. Dagianis is an ophthalmologist serving Nashua and the surrounding communities. He is affiliated with Nashua Eye Associates, a full-service eye care practice whose mission is to deliver the highest quality, state-of-the-art eye care in convenient locations. The practice offers fully integrated eye services for the whole family. 

In regards to his education, Dr. Dagianis earned his medical degree from the University of Cincinnati College of Medicine in 1976. He went on to complete an internship at Albany Medical Center in 1977 and a residency in ophthalmology at Wills Eye Hospital of Thomas Jefferson University in 1980. 

Additionally, Dr. Dagianis is board certified in ophthalmology by the American Board of Ophthalmology (ABO). The ABO is an independent, nonprofit organization responsible for certifying ophthalmologists in the United States. 

His patients have excellent experiences with him, one stating, “Absolutely the best in the business! I have been seeing Dr. D for over 25 years and have had several eye issues and he has taken magnificent care of me and my wife.  Don't settle for less!”

Ophthalmology is a branch of medicine and surgery which deals with the diagnosis and treatment of eye disorders. As an ophthalmologist, Dr. Dagianis can diagnose and treat diseases, perform eye operations and prescribe eyeglasses and contacts. 

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