question

[StarSecret]

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How does sildenafil cause transient blue-green colour weakness via phosphodiesterase inhibition?

 

[sanj238]

How does sildenafil cause transient blue-green colour weakness via phosphodiesterase inhibition?

Doesn't seem like a usmle q

 

[notbobtrustme]

my guess would be that it ****s up something in those cones related to signaling, but I don't think anyone knows the precise mechanism.