1.   An older technique, radial keratotomy, required making slits deep into the cornea.

2.   North has long been a state soccer power, and field hockey has lately made it deep into the tournament.

3.   Still, interest rate cuts, once made deep enough, have never failed to stimulate the economy eventually.

4.   But the customs union will bring a major shock to the Turkish economy, which will have to make deep structural adjustments to meet EU competitiveness standards.