Very Efficent and considerate. My surgerey has not yet finally worked. One eye was initially over corrective to slight long sight, then after a second operation it was over corrected the other way & a bit short sighted. We are waiting to see how it settles down before deciding what to do next. But I was very short sighted before, and now I can drive and read bookes without glasses (even though neither process is perfect) and that is a huge improvement.