Eyes Checked

Bob is on a train to work.
At the next station, Jim gets on and as he's about to sit down,
he takes out his wallet, shows Bob a photo of his wife.
He says, "Isn't she gorgeous?"
Bob replies, "You should see my wife?"
Jim replies "Is she stunning?"
"No, she's an Optometrist!!!!"

Lloyd had to see the doctor for his employment medical. As part of this he had his eyes checked and the doctor put in a couple of drops as part of the test.
On the way home his vision got mighty blurry so bought the afternoon newspaper, (Remember those?) to hide his blurry vision in on the train home. Half way home he realized that he had been hiding his head in the newspaper that he was holding upside down.

Ref: A Railway Life by Lloyd Holmes pp23, 26.