Patient-controlled Sedation With Propofol During Cataract Surgery Under Topical Anesthesia

Inclusion Criteria: * Patients should be operated of cataract under topical anesthesia Exclusion Criteria: * Contra-indication to sedation * Complicated cataract * Hypersensitivity to propofol, known or suspected hypersensitivity to egg phospholipid, soybean or peanut protein * State of acute shock, severe dyslipidemia, severe liver failure, serious bleeding disorders * Comprehension and language impairment * Written and signed informed consent by the patient to participate in the study