Doctor jokes-Failing eyesight

A young women visited her eye doctor complaining of failing eyesight.
The doctor sat her in front of a standard eye chart.

Doctor: "Can you read the bottom line?"
Girl: "No."
"Can you read the center line?"
"No."
"Can you read the large top line"
"No.
"Can you even see the chart?"
"No."
The doctor is clearly frustrated and whips his penis out of his pants. "Can you see this?"
"Of course!"
"Well, there's your problem - you're cock-eyed!"