What causes gas bubble in vitrectomy to break up into smaller bubbles? will eventual re-absorption into blood be affected?

Dissolution : Intraocular gas used in retinal surgery to fix tears & detachments of the retina, dissolve over many days to weeks, depending on type of gas. The large gas bubble slowly breaks apart due to movement of the eye and gas dissolution. Eventually the gas is absorbed &eliminated trough the fluid turnover of the vitreous replacement fluids (BSS) & out through the drainage angle of the eye. No effect on u