General anesthesia is less utilised in ophthalmology. There are some criteria that lead to general anesthesia: patients with auditive debility aged and senile patients, allergic patients, children and young patients, and subjects who totally refuse loco-regional procedures. General anesthesia utilises as basic products: narcotic substances, analgesic substances, or neuroleptic substances utilised separately or associated, with posology adaptated to several factors: patients' pulse, physical statement, age, duration. The type of anesthetic substance depends also on the experience of the anesthetist
