Introduction: It is known that phacoemulsification of cataracts after penetrating keratoplasty there are always some difficulties and of course a higher rate of different intraoperative complications. Phacoemulsification after PK may cause significant endothelial injury and affect long term graft survival. Aim: The aim of this report is to describe one of these cases and the possible ways to manage them. Case report: We report a case o of a 31-year-old female patient, with a cataract on her left eye. She reported that when she was 10 years old, she was admitted to regional hospital in Bosnia and Herzegovina due perforative corneal war injury. At the age of 11 years at Germany on her left eye corneal transplantation was performed. She reported that she wasnt ever seeing quite good, due high myopia. Twenty years after war injury she was admitted to hospital. At that moment patient has been ophthalmologicaly examined (visual acuity testing, biomicroscopy, tonometry, ultrasound of both eyes with biometry and ophthalmoscopy). At the day of admission to the hospital on slit lamp we found occlusion of pupil and complicated cataract. Her only wish was to get operated due cosmetic reasons. Before surgery her visual acuity on her left eye was light perception. Thirty days after surgery her visual acuity was 0,1 without correction. Conclusion: It is concluded that cataract surgery in patients after keratoplasty is more complicated. Therefore, these patients should be managed with utmost care and operated by an experienced surgeon.