Cyanopsia refers to what kind of vision change?

• A. Yellow tint
• B. Blue tint
• C. Red tint
• D. Green tint

Answer: (B)

Cyanopsia means blue-tinted vision. The prefix cyan refers to blue, and -opsis denotes vision, so the term literally describes seeing things with a blue cast. This change is classically reported with certain drugs like sildenafil, which can cause a blue tint to the perception of objects. The other color-tint terms describe different hues (yellow-tinted vision is xanthopsia, green-tinted vision is chloropsia, etc.), which is why cyanopsia specifically points to a blue tint.