Blue Color Vision as a Rare Sign of Digitalis Toxicity

We report a 73-year-old woman who had taken an amount of 0.25 mg/day of digoxin for an unknown period of time because of chronic congestive heart failure and chronic atrial fibrillation. She was admitted due to nausea, vomiting, abdominal pain, atrial fibrillation with a slow ventricular rate and with a short corrected Q-T interval in an electrocardiogram of 345 milliseconds, high serum digoxin level of 4.2 nmol/L, and interestingly color vision disturbances: blue colored vision. After discontinuation of the digitalis treatment, all signs of digitalis toxicity, including blue color vision, disappeared within five days