Vitrectomy surgery is a procedure performed to remove the vitreous, a gel-like substance inside the eye. This surgery is used to treat various eye problems such as retinal diseases, intraocular bleeding, and macular disorders. During the procedure, the vitreous gel is removed and often replaced with fluid or gas. This helps ensure that the retina and other internal structures of the eye function properly. Vitrectomy is typically performed under a microscope and may require an overnight hospital stay.