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If both IOLs are set for the same target, is this generally achieved or is the vision in one eye often slightly different than the other? In other words, even if your surgeon aims for the same target in each eye, do you often have inadvertent mini-monovision when all is said and done?
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Night-Hawk judith93585
Edited
There is always the possibility of up to 0.5D error due to the IOLs only come in 0.5D steps.
Also there is the unpredictability of the healing of the incision made in the eye to insert the IOL, that can introduce additional error and can add some residual astigmatism.
There is now the new LAL IOLs that can be adjusted with ultraviolet light weeks after surgery to correct any errors, but with the older standard IOLs the result is never exact.
RonAKA Night-Hawk
Edited
Some surgeons claim they can reduce astigmatism with the IOL incision location. However I suspect the range that they can do that in is limited. It must be easiest for them to make the incision on the temporal side of the eye.