A classic manifestation of digoxin overdose?

• A. Flying bug hallucinations
• B. Patient yellow green vision halos around objects
• C. Insatiable thirst
• D. Fever > 105 F

Answer: (B)

Visual disturbances are a hallmark of digoxin toxicity, and the most classic finding is xanthopsia—yellow or yellow-green halos around objects. This color vision change comes from digoxin’s effect on retinal cells via Na+/K+ ATPase inhibition, which disrupts normal photoreceptor processing and color perception. In overdose, patients often report seeing a yellow tint or halos, a clue that points strongly toward digoxin toxicity.

Other signs like insatiable thirst or very high fever aren’t characteristic of digoxin toxicity, and while delirium or visual disturbances can occur, the distinctive yellow-green halos around objects are the feature most exam-focused on for this overdose.