Watch baby Piper see her parents clearly for first time. It will melt your heart. 

Her parents struggle to put on her new glasses and then we can see the obvious difference they make to her vision. Piper pauses momentarily, gazing awe-struck at her mother, before bursting into a grin and staring with her mouth agape.The look on Pipers face is priceless. She just can't believe what's going on. So sweet and innocent. With an amazed expression on her face her daddy attracts her attention, saying: 'Piper, hi!'
she looks over at her father, and smiles instantly.

According to All TV Channel 2:

Mother-of-two Jessica Sinclair, 26, from Cincinnati, Ohio, posted the video of her daughter, who has weak eyesight, on Facebook along with the caption: 'Picked up her glasses. Went out to eat and put them on her. Her reaction melts my heart.'