1. A method for generating an alignment alignment guide for surgeon to assist in intraocular lens placement in an eye, comprising: collecting preoperative corneal topography data comprising a corneal vertex location and a pupil center location for an eye that is not dilated; determining an offset between the corneal vertex location and the pupil center location; determining alignment data for an intraocular lens based on the offset; locating a dilated pupil center for an image of the eye taken by a camera after the eye is dilated using image analysis software; determining an adjusted offset between the corneal vertex and the dilated pupil center; and displaying adjusted alignment data on the image of the eye based on the adjusted offset.