Heartwarming moment baby beams in delight after receiving new glasses as parents tell how they were 'overwhelmed with emotion' when he smiled

This is the tear-jerking moment a four-month-old baby smiled in delight after seeing his mother clearly for the first time in his life. Leopold Wilbur Reppond, known as Leo, suffers from a rare disorder called oculocutaneous albinism. 

The condition affects the color of a person's hair, skin and eyes and means that the youngster is unable to see properly. Leo's film producer father David, 39, from Seattle, Washington, said 'cuteness went through the roof' when his son smiled for the first time, adding that there 'wasn't a dry eye in the house'. 

The heartwarming video shows a pair of glasses being pulled over the youngster's head (top right) by his mother. After a momentary bit of confusion (bottom left) as the spectacles are placed on him, he looks up at his mother who says: 'Hi honey'. He makes eye-contact with her and then immediately reacts by smiling (main).