Cyanopsia
Cyanopsia
Cyanopsia (pronounced: /saɪˈænɒpsiə/) is a medical condition where everything a person sees is tinted with blue. It is often reported by individuals who have been exposed to high altitudes or who have used sildenafil (Viagra), a medication used to treat erectile dysfunction and pulmonary arterial hypertension.
Etymology
The term "Cyanopsia" comes from the Greek words "kyanos" meaning "dark blue" and "opsis" meaning "seeing". It was first used in the medical literature in the late 20th century.
Symptoms
The primary symptom of Cyanopsia is a blue tint to the vision. This can range from a slight blue hue to a strong blue tint that affects all visual perception. Some people may also experience photophobia, or light sensitivity, and blurred vision.
Causes
Cyanopsia is most commonly caused by changes in the function of the retina, the part of the eye that senses light. This can occur due to exposure to high altitudes, where the reduced oxygen levels can affect the retina's function. It can also be a side effect of certain medications, most notably sildenafil (Viagra).
Treatment
Treatment for Cyanopsia depends on the underlying cause. If it is due to high altitude, the symptoms will usually resolve once the person descends to a lower altitude. If it is a side effect of medication, the symptoms may resolve once the medication is discontinued. In some cases, treatment may involve managing the symptoms, such as wearing sunglasses to reduce light sensitivity.
Related Terms
External links
- Medical encyclopedia article on Cyanopsia
- Wikipedia's article - Cyanopsia
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