When we inject an IOL, we must ensure that it goes into the eye (either in the capsular bag or in the ciliary sulcus) in the correct orientation. There is the “7L” rule” which means that the leading haptic should come out of the injector with the shape of the number 7 and the trailing haptic should have the configuration of an upper case L. Once the IOL is in the eye, it is easy to determine if it has the correct orientation by remembering that S is for stupid (stupid mistake, not stupid doctor — in case someone fragile gets offended).
So now that the IOL is inside the eye upside down, how do we fix the situation? Can we leave the IOL upside down?
These important questions are answered in detail in the video shown here: