An ophthalmic surgical apparatus including: a control device a user interface which, at least intermittently, has data communication with the control device a first measuring device configured for determining at least one value intraoperatively, the value being characteristic for an eye to be treated by surgery a second measuring device configured for determining at least one value preoperatively and/or intraoperatively, the value being characteristic for the eye to be treated by surgery, and including a first computing unit which is suitable and intended, using the value determined intraoperatively and the value determined preoperatively and/or intraoperatively, for ascertaining at least one first output value which is characteristic for at least one intraocular lens to be selected, wherein the user interface at least preferably includes an output device suitable for outputting the output value or a value derived therefrom.
