Are safety knives the shape of things to come in ophthalmology? That's the considered opinion of some leading cataract surgeons, who like the way today's safety scalpels perform and protect in the OR. But these doctors are quick to point out that one thing stands in the way of widespread acceptance: their colleagues who are reluctant to give them a try, even though the law says you have to at least consider them. Here are 10 tips for clearing this high hurdle.