"That's it," he tells his wife.
"I'm giving up golf. My eyesight has got so bad. Once I've hit the ball, I can't see where it went."

His wife sympathizes.
As they sit down, she has a suggestion:
"Why don't you take my brother with you, and give it one more try."

"That's no good," sighs Arthur. "Your brother is a hundred and three. He can't help."

"He may be a hundred and three," says the wife, "but his eyesight is perfect."

So the next day, Arthur heads off to the golf course with his brother-in-law.
He tees up, takes an almighty swing, and squints down the fairway.

He turns to the brother-in-law. "Did you see the ball?"

"Of course I did!", says the brother-in-law. "I have perfect eyesight."

"Where did it go?" asks Arthur.

"Can't remember."