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Merck Manual
Professional Version
MEDICAL TOPICS
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ABOUT US
MEDICAL TOPICS
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Professional
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About the Merck 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