What is a gas bubble used for in the vitrectomy process?

Vitrectomy is a procedure to remove the vitreous gel from the eye so that doctors can access the retina or because there is blood in the vitreous gel that is not going away on its own, says WebMD. Doctors access the retina this way to treat large retinal tears, repair traction retinal detachment, remove scar tissue or treat a proliferation of blood vessels through the retina. Removing bloody vitreous gel can cause great improvements in vision very soon after surgery, if this is the reason.


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