An adult patient was sent to Kellogg Eye Center by an optometrist for a 3-month history of gradual blurry vision in the right eye. The optometrist reported abnormalities during slit-lamp examination in the right eye. The left eye was unaffected. The patient denied pain in either eye. The patient is overall healthy without any pertinent past medical or surgical history. On examination, visual acuity was 20/40 in the affected eye and 20/25 in the left eye. General physical exam was otherwise unremarkable. Pupillary examination showed a mild afferent pupillary defect in the right eye.
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