What symptoms might indicate oxygen toxicity?

Oxygen toxicity occurs when a diver breathes in an excess amount of oxygen, especially at high pressures. The symptoms associated with oxygen toxicity can be quite severe and significantly impact a diver's ability to function safely underwater.

Visual disturbances, such as blurred vision or tunnel vision, are among the first indicators of oxygen toxicity. Nausea can occur as the body reacts to the imbalance of oxygen. Additionally, twitching, which may manifest as muscle spasms or twitching movements, is a direct neurological response to elevated oxygen levels affecting the nervous system. Convulsions are the most severe manifestation, indicating that the central nervous system is severely impacted. These symptoms are critical for divers to recognize, as they can lead to dangerous situations if not addressed promptly.

Understanding these symptoms is essential for divers utilizing enriched air mixtures. Recognizing them can enable swift action to reduce risk and ensure safety during dives.