Diving relevance of pulmonary oxygen toxicity:

Pulmonary oxygen toxicity is entirely avoidable event while diving. The time-factor and the naturally intermittent nature of most diving makes this a relatively rare (and even then, reversible) complication for divers. Guidelines have been established that allow divers to calculate when they are at risk of pulmonary toxicity.

Space relevance of pulmonary oxygen toxicity:

As noted earlier in this article, the toxicity is from high partial pressure. This is illustrated by oxygen use in spacesuits and other low-pressure applications (historically, for example, the Gemini spacecraft and Apollo spacecraft). High fraction oxygen is non-toxic even at breathing mixture oxygen fractions approaching 100%, because the oxygen partial pressure is not allowed to chronically exceed 0.35 bar in these applications.