Ophthalmologic Examinations After Infusion of ZK200775

Inclusion Criteria: * The participant must be a voluntary proband * Age between 55 and 65 years * Body weight must not exceed the following value: Body height in cm minus 100 = body weight \[kg\] +/- 20% * Male sex * Written informed consent * Physical examination: Probands must show normal findings without clinical relevance, mental and physical health is required; Exclusion Criteria: * Clinical history: * Substantial pre-existing medical condition * Known allergy to the employed effective components or galenic components * Medicaments and drugs * Intake of systemically or locally acting drugs which conflict with the aim of the trial or that can influence the results (antipsychotic drugs, antidepressants, barbiturates and benzodiazepines) * A clinical history that hints to substance or alcohol abuse * Nicotine abuse of more than 10 cigarettes a day * Consumption of alcoholic beverages on the day prior to the examinations * Extreme physical stress (sports or work) within 8 days prior to the examinations * Blood donation within 2 months prior to the examinations * Relevant vaccination or stay abroad * Special or onesided alimentation (strict vegetarianism, low-caloric diet) * Simultaneous participation in another clinical trial * Vital signs (after 3 minutes of rest) * Blood pressure with systolic values \> 160 mmHg and / or diastolic values \> 95 mmHg * Heart frequency: Values beyond 50-100 beats per minute * Electrocardiogram * abnormal 12-channel ECG * Laboratory findings * Hepatitis antigen (HBsAG), hepatitis C-antibodies or positive HIV-test * Clinical pharmacology * positive drug test * clinically relevant abnormalities of the examined parameters * Opinion of the investigator: when due to scientific or personal reasons or matters of compliance or safety a patient should not take part in the trial * Opacification of optic media, retinal disease, optic nerve disease, amblyopia or color vision defects * Status post intraocular surgery (exception: cataract surgery with implantation of a posterior chamber lens), laser coagulation * Myopia \> -5 diopters, hyperopia \> +5 diopters * Narrow angle glaucoma