Is an oxygen boost needed to perform efficient epi-on cross-linking?

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We know from basic science that oxygen plays an important role in the cross-linking reaction.
In the early cases of epi-on, we were able to verify that the major component that was missing was oxygen and that oxygen depletion occurred rapidly. Then we had all the early experiments showing that by increasing oxygen concentration in the environment, we could potentially improve oxygen diffusion across the epithelium, leading to increased stromal oxygen