use as surgical aids in ophthalmic anterior and posterior segment surgeries including intra/extra cataract extraction with or without implantation of an intraocular lens (IOL), intraocular lens implantation, keratoplasty / corneal transplantation surgery, glaucoma filtering surgery, and surgical procedurs to reattach the retina.PreviscAid has also been used successfully as a vitreum replacement after vitrectomy and retinal detachment surgery. Due to its lubricating, transparent and viscoelastic properties. PreviscAid aids in maintaining a deep chamber and visibility during anterior segment surgery. While allowing for more efficient manipulation and implantation with less trauma to the corneal endhotelium and other surrounding ocular tissues. PreviscAid may also be used to coat an intraocular lens as wll as the tips of surrounding tissues are protected from possible damage arising from surgical instrumentation during ophthalmic surgeries. PreviscAid also preserve the tissue integrity and good visibility when used to fill the anterior or prosterior segments of the eye following open sky procedures.