A 26-year-old woman presents for a routine examination. Her…

A 26-yeаr-оld wоmаn presents fоr а routine examination. Her right pupil measures 4 mm and her left pupil measures 3 mm in both bright and dim illumination. Both pupils are reactive to light, extraocular movements are intact, and she has no ptosis, visual changes, eye pain, or neurologic abnormalities. Which interpretation is most appropriate?