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Professional
Consumer
MSD Manual
Consumer Version
HEALTH TOPICS
HEALTHY LIVING
SYMPTOMS
EMERGENCIES
RESOURCES
NEWS
ABOUT US
Home
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About the MSD Manuals
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Authors
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john j. chen
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John J. Chen, MD, PhD
Specialities and Expertise
Neuro-ophthalmology
Affiliations
Consultant; Professor of Ophthalmology and Neurology
Mayo Clinic
Manual Chapters and Commentaries
Chapters
Optic Nerve Disorders