Improved Patient Recovery After Anesthesia

Inclusion Criteria: * adult ASA class I-III subjects of both genders scheduled to undergo eye surgery at the Moran Hospital. Exclusion Criteria: * a history of renal or hepatic disease, chronic alcohol or drug abuse, disabling neuropsychiatric disorder, hypersensitivity, or unusual response to other halogenated anesthetics, pulmonary hypertension, increased intracranial pressure, seizure disorder, or personal/familial history of malignant hyperthermia, and current smokers. * Subjects will also be excluded if they are currently being treated with known hepatic enzyme-inducing drugs (e.g., phenobarbital, dilantin, or isoniazid) or with drugs known to alter anesthetic requirements (e.g., opiates, clonidine, alpha2 agonists, alcohol, anticonvulsants, antidepressants, barbiturates, benzodiazepines or other tranquilizers). * Subjects will also be excluded if they have intolerance to non-steroidal anti-inflammatories. * In addition subjects who have received general anesthesia within the previous 7 days, received any investigational drug within the previous 28 days, or participated in a previous isoflurane or desflurane study will be excluded. * Female subjects can be neither pregnant nor breast feeding. * Subjects with significant restrictive lung disease will also be excluded. * Subjects passing these criteria will be further evaluated with a medical history including medications, abbreviated physical examination, clinical laboratory tests (urine drug test), and a urine or serum human chorionic gonadotropin pregnancy test for women with childbearing potential.