A 20-year-old woman complained of decreased visual acuity in her left eye and diplopia. She had visited several hospitals previously. On examination, her left visual acuity varied, and her squint angle also changed. No organic disorders that could have caused the symptoms were noted. She complained of edema of her left arm. On admission to another hospital, her arm was found bound tightly with tape. She wanted surgery to correct her esotropia but did not expect to improve her quality of life by having it done. We believe that our patient may have Münchausen syndrome and that the decreased visual acuity and diplopia may be a rare association with the syndrome.