Abstract:Dysthyroid optic neuropathy (DON) is a serious manifestation of thyroid eye disease (TED) resulting in permanent visual loss. There is controversy regarding the diagnostic features of DON. Relative afferent pupil defect (RAPD) in TED is highly specific for DON. Our first patient, a 42-year-old male presented with proptosis and intermittent blurring of vision with best corrected visual acuity of 6/6 in both eyes and right RAPD as an early sign of DON. Our second patient, a 54-year-old female presented with prop… Show more
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