<prompt> Astigmatism in emmetropic eye of elderly person contribute to:1d2D3D4D  <response>: Laser vision enhancements When planning presbyopia-correcting IOLIntra ocular lens surgery in a patient with a high level of pre-existing astigmatism ie, more than 3 D, a bioptics approach ie, IOL followed by laser vision enhancement may be needed. LRIs alone are unlikely to correct the astigmatism completely.Limbal Relaxing Incisions LRI are a refractive surgical procedure to correct minor astigmatism in the eye. There are several different strategies for these planned laser vision enhancements. The first is to perform the presbyopia-correcting IOL surgery followed by LASIK or PRK. REF : AK KHURANA 7TH ED 