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Doctors & Staff

Meet our experienced and friendly doctors and staff who make The O’Byrne Eye Clinic a proud provider of vision care products and ophthalmologic services on the Northshore and surrounding areas. 

Marilu O’Byrne, M.D.

Marilu O’Byrne is originally from New Orleans although she was born in Cali, Colombia, South America.  She received her medical degree from LSU School of Medicine in 1981.  Following her degree, she did her internship in Internal Medicine at Ochsner Foundation Hospital for one year.  She then did her residency in Ophthalmology at the LSU Eye Center from 1982 until 1985.  Dr. O’Byrne received her Board Certification of Ophthalmology in 1986.

Dr. O’Byrne worked alongside her Father “Alvaro O’Byrne” and Brother “Alvaro J. O’Byrne” in a private practice in New Orleans East for over 20 years until Hurricane Katrina devastated the area in 2005.  She then relocated the practice to St. Tammany Parish in 2006.  The O’Byrne Eye Clinic now has two locations: one in Mandeville and one in Slidell.  Our Mandeville address is 1580 W. Causeway Approach and our Slidell address is 2160 E. Gause Blvd. 

Dr. O’Byrne currently resides in New Orleans along with her husband and three children.  In her free time, Dr. O’Byrne enjoys cycling and spending time with her family. She is also fluent in Spanish and French. 


●LSU Medical School, New Orleans – 1977-1981

●Member of Honor Society AOA

●Ochsner Found Hospital Internship in Internal Medicine, New Orleans -1981-1982

●LSU Eye Center Ophthalmology Residency, New Orleans – 1982-1985

●Private Practice, 1985-Present

Areas of Expertise:

●Cataract Surgery

●LASIK Surgery


●Diabetic Retinopathy

●Macular Degeneration

●Dry Eye Syndrome

●Ocular Surface Disease

●Comprehensive Eye Exam

●Contact Lens 

Professional Memberships:

●American Academy of Ophthalmology

●New Orleans Academy of Ophthalmology

●Louisiana Ophthalmology Association

●Hispanic American Association of New Orleans

●Louisiana Academy of Eye Physicians and Surgeons