medico on Instagram: "removes the eye's vitreous gel (the clear substance filling the back of the eye) to access and repair the retina, treating issues like retinal detachment, macular holes, bleeding, or scar tissue that block vision. The removed gel is replaced with saline, a gas bubble, or oil to keep the eye's shape, allowing surgeons to fix retinal problems and restore sight. Why it's done Retinal Detachment: When the retina pulls away from the back of the eye. Diabetic Retinopathy: Bleedin