I gave an eye to save from night
A babe born blind;
And now with eager semi-sight
Vast joy I find
To think a child can share with me
Earth ecstasy!

Delight of dawn with dewy gleam
On damask rose;
Crimson and gold as pennons stream
Where sunset flows;
And sight most nigh to paradise,
Star-studded skies.

Ah! How in old of age I feel,
E'er end my days,
Could I star-splendoured sky reveal
To childish gaze,
Not one eye would I give, but two,--
Well, wouldn't you?

Robert William Service

http://www.poemhunter.com/poem/sacrifice-2/