Put an eyewinker on the back of the hand, knock that hand with the other so as to throw the eyewinker over the shoulder, and at the same time wish. If the eyewinker is not seen again, the wish will come true.
Stoneham, Mass.

Put an eyewinker on the back of the hand, knock that hand with the other so as to throw the eyewinker over the shoulder, and at the same time wish. If the eyewinker is not seen again, the wish will come true.
Source: Current Superstitions (1896), entry 441.
Fanny D. Bergen, editor.
Modern normalized navigation; the historical attribution above remains unchanged.