We’ve seen miles for cereal, miles for test drives, miles for pudding cups, and now … miles for surgery?

Northwest Airlines and Detroit-based D.O.C. Optical are offering all customers who undergo Lasik surgery at the Royal Oak D.O.C. store 20,000 miles.

The two companies have also partnered to offer one mile per dollar spent at D.O.C. stores nationwide, in addition to various monthly bonuses.

We’ll keep an eye on it.