Case ReportRETINAL DYSTROPHY IN A PATIENT WITH McARDLE DISEASEAlsberge, Joseph B. MD*; Chen, Judy J. MD*; Zaidi, Ali A. MD†; Fu, Arthur D. MD*Author Information *West Coast Retina Medical Group/California Pacific Medical Center, San Francisco, California; and †Pacific Eye Associates, San Francisco, California. Reprint requests: Arthur D. Fu, MD, 1445 Bush Street, San Francisco, CA 94109; e-mail: [email protected] Supported in part by Pacific Vision Foundation. None of the authors has any conflicting interests to disclose. Each author participated sufficiently in the work to take public responsibility for appropriate portions of the content. The corresponding author had full access to all the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. Retinal Cases & Brief Reports: May 2021 - Volume 15 - Issue 3 - p 299-301 doi: 10.1097/ICB.0000000000000790 Buy Metrics AbstractIn Brief Purpose: To report a case of pattern dystrophy in a patient with McArdle disease, a rare autosomal recessive disorder of glycogen metabolism. Methods: Case report. Results: A 29-year-old woman with a history of muscle biopsy–confirmed McArdle disease presented with fundus findings consistent with pattern dystrophy. Multimodal imaging, including optical coherence tomography and fundus autofluorescence, was performed. Conclusion: To our knowledge, this is the third reported case of pattern dystrophy in a patient with McArdle disease. A case of pattern dystrophy in a patient with McArdle disease, a rare inherited disorder of glycogen metabolism, is reported.