What's the reason, Daddy??

Trying to find a the title and lyrics of a sentimental song about a blind boy that my mum liked to sing to us as kids...

What's the reason, Daddy
That I can't see like you?
I've often wondered what you're like,
Though I know you're kind and true.

i found even a sample for this song, but i don't know this song.
Here's the sample, maybe someone else knows: http://www.meades.org/trevor/whats_the_reason_daddy.mp3

I think, the title is What's the reason Daddy, as i see it on this CD: http://www.tagtuner.com/music/albums.../album-v21193d

That's definitely the one.
Can't seem to find lyrics, though.

What's the reason Daddy.

The darkest cloud that crossed my life,
And also of my darling wife,
Was when our baby boy was born,
To find him blind our hearts where torn.

As he grew up this sturdy boy,
His sparkling tongue would bring us joy,
As on my knee he’d sit and play,
My tears would fall to hear him say.

What’s the reason Daddy,
That I can't see like you,
I oft times wonder you’re like,
I know your kind and true.

Mummy says God will be kind,
And if to him I pray,
He will give me sight,
That I may see your face and light of day.

When work is done I homeward speed,
And there he’ll sit and hear me read,
And nothing gives me greater please,
To read him of great lands and seas.

He questions me on dark and bright,
The Sun and stars at night,
And then he’d say what shall I do,
If God takes you and mummy too.

Whats the reason daddy,
That I can't see like you,
I oft times wonder what you are like,
I know you are kind and true.

Mummy says God will be kind,
And if to him I pray,
He will give me sight,
That I may see your face and light of day.