You must know instantly if the IOL is being implanted in the eye correctly. We have explained how the IOL should never be in the “S” configuration (S = stupid mistake because it would be upside-down).
It is easy to see the correct anti-S formation after the IOL is fully implanted, but what about when just the leading haptic is being inserted?
This is where the “7L” guideline helps: the first haptic should come out in the “7” configuration and the trailing haptic should be the “L” orientation.
click below to see the 7L rule in action as I deliver a misloaded IOL: