Good One to read!

One old man was sitting with his 25 years old son in the train. Train is about to leave the station. All passengers are settling down their seat. As train started young man was filled with lot of joy and curiosity. He was sitting on the window side. He went out one hand and feeling the passing air. He shouted, "Papa see all trees are going behind".Old man smile and admired son feelings.
Beside the young man one couple was sitting and listening all the conversion between father and son.They were little awkward with the attitude of 25 years old man behaving like a small child.Suddenly young man again shouted, "Papa see the pond and animals. Clouds are moving with train".Couple was watching the young man in embarrassingly. Now its start raining and some of water drops touches the young man's hand. He filled with joy and he closed the eyes. He shouted again," Papa it's raining, water is touching me, see papa".
Couple couldn't help themselves and ask the old man.

"Why don't you visit the Doctor and get treatment for your son."
Old man said, " Yes, We are coming from the hospital as Today only my son got his eye sight for first time in his life".

i don't know whether this been posted earlier.. anywayz good one to read!@