Inclusion Criteria:  Male and female patients between the age of 50 to 100 years Day-hospital and inpatient care Clinically significant opacity of the lens with indication for cataract surgery on both eyes Lack of previous ophthalmic surgeries Lack of relevant ophthalmic conditions: Pseudoexfoliation syndrome, eye injuries, present inflammation (in terms of uveitis, endophthalmitis and iridocyclitis), restricted mydriasis (pupil diameter below 7mm after application of tropicamide 0.38% and phenylephrine HCL 2.5% - at preoperative examination), elevated intraocular pressure, alpha-receptor inhibitor intake (e.g. tamsulosin) due to impeded mydriasis  Exclusion Criteria:  Allergic to phenylephrine, tropicamide, sodium metabisulfite, disodium edetate, sodium hydroxide, hydrochloric acid, lidocaine hydrochloride, sodium chloride, disodium phosphate dodecahydrate, disodium phosphate dihydrate Allergic to anesthesia (amide type) Allergic to atropine derivates Heart disease, tachycardia, hypertensive crises Aneurism of big vessels Untreated hyperthyroidism Untreated closed angle glaucoma and narrow angles with tendencies to glaucoma by intake of mydriatic drugs Pregnancy, breast feeding and premenopausal women