Nitrous oxide as a coolant in ophthalmic surgery.
D002245:Carbon Dioxide; D003452:Cryosurgery / Q000295:instrumentation*; D005128:Eye Diseases / Q000601:surgery*; D005615:Freezing; D006801:Humans; D009609:Nitrous Oxide; D009885:Ophthalmology / Q000295:instrumentation*; D013696:Temperature
D002245:Carbon Dioxide; D009609:Nitrous Oxide