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Dr. Jennifer Stewart


Dr. Jennifer Stewart is an optometrist, internationally recognized speaker, writer, consultant, and entrepreneur. She has a passion for helping optometrists and organizations with operations, sales success, practice management and sales team training through her advisory and consulting firm, OD Perspectives. She is an established writer and has been featured in most optometric publications, is an Adjunct Assistant Professor at the New England College of Optometry and a consultant for Coopervision, MacuHealth and Zyloware. She was also awarded the Emerging Leader Award in 2022 from the Optical Women's Association.


With a deep interest in sports vision, Dr. Stewart is the Co-Founder and Chief Vision Officer for Performance 20/20, which provides services for sports and performance vision training. She is a recipient of the Theia Award for Innovation by Women in Optometry and serves on the Executive Board for the International Sports Vision Association. Dr. Stewart is passionate about sports safety, enhancing performance, and helping business owners achieve their goals. An avid Disney fan, she lives her life by the quote “if you can dream it, you can do it.” She is inspired to help others with their dreams.

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Professor John Nolan


Professor John Nolan is the Principal Investigator of the Macular Pigment Research Group (MPRG) at the Nutrition Research Centre Ireland. His research group studies the role of eye nutrition for vision and the prevention of blindness. He is currently investigating the link between nutrition and brain health and function.

He has presented at over 100 international scientific conferences and published over 85 peer-reviewed scientific papers, which have been cited 2956 times with an h-index of 34. He is also the editor of the book Carotenoids and Retinal Disease. Professor Nolan also has editorial roles at the European Journal of Ophthalmology and the Journal of Alzheimer’s Disease and serves as the chairman of the International Brain and Ocular Nutrition Conference, held at Downing College, Cambridge University, UK. He is a Fulbright Scholar and serves as the director of Nutrasight Consultancy Ltd., SightRisk Ltd., and NutrAlgae Ltd.

Jim Stringham, PhD


Dr. Stringham joined the MacuHealth team after a distinguished career in research and academia. He earned his doctorate in experimental psychology and neuroscience from the University of New Hampshire in 2003, and did postdoctoral training at both Harvard Medical School and the Medical College of Georgia. He has since held positions at the University of Georgia, the Air Force Research Laboratory, and most recently the Duke Eye Center. Nearly all of his research has been geared toward understanding visual and cognitive benefits of the macular carotenoids lutein, zeaxanthin, and meso-zeaxanthin.


As the Chief Scientific Officer of MacuHealth, Dr. Stringham will expand the scope of research and application of the macular carotenoids to include investigation of effects that may benefit visual and cognitive performance in athletes, visual and systemic health in those with metabolic disease, and neural health and development in children.

Dr. Tim Earley


Dr. Tim Earley obtained a bachelor’s degree in Visual Science and his Doctorate in Optometry from the Pennsylvania College of Optometry in 1998.  He is co-owner of Medina Vision and Laser Centre in Medina, OH.  He is also the staff optometrist of the Bright Eyedeas Vision Clinic at the Medina County Career Center. Dr. Earley is a proud member of the American Optometric Association, Ohio Optometric Association, and is a current Candidate for Fellowship with the American Academy of Optometry.  In addition to various publications, Dr. Earley is a national speaker and consultant in the area of specialty contact lenses, macular degeneration and practice management.

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