Anterior Chamber Depth and IOL Calculations.

The accurate prediction of postoperative anterior chamber depth (ACD) (intraocular lens (IOL) position) is important for accurate IOL power calculation. Different means to predict the postoperative ACD are discussed. Some of them are based on preoperative biometric measurements, while others can use intraoperative optical coherence tomography measurements of aphakic ACD. Whatever method is used the postoperative shift in ACD should be taken into account and possible factors like rhexis size, centering, and shape as well as patient factors such as zonule integrity and capsular shrinkage may also have an effect.