Purpose: to provide a clinical case of cataract phacoemulsification with implantation of a multifocal intraocular lens (IOL) in a patient with posterior keratoconus.Clinical case. A 58-year-old patient came to the clinic with complaints of decreased visual acuity in both eyes over the past 2 years. A series of standard instrumental examinations and Scheimpflug keratotopography were performed. An initial age-related cataract, moderate hyperopia, complex hyperopic astigmatism, posterior keratoconus, and peripheral chorioretinal dystrophy was diagnosed.Results and discussion. To achieve high visual functions and correct presbyopia, the patient was offered phacoemulsification surgery with implantation of a multifocal intraocular lens (IOL) Oculentis in the right eye and a multifocal toric one in the left one.Conclusion. The result of our surgical treatment showed the multipurpose of the multifocal IOL Oculentis in some nonstandard cases and conditions of the cornea.