What is DuoVisc used for?
DuoVisc is a packet containing 2 ophthalmic viscosurgical devices (OVDs): the dispersive Viscoat, which was used for intraocular lens (IOL) implantation. In the Viscoat group, the Viscoat was used during the entire surgery.
What is DuoVisc viscoelastic system?
DuoVisc®Viscoelastic System offers both the endothelial protection of chondroitin sulfate in VISCOAT®OVD (dispersive) with the proven mechanical protection and space maintenance found in PROVISC®OVD (cohesive).
What is viscoelastic in cataract surgery?
Viscoelastics, also referred to as ophthalmic viscosurgical devices, or OVDs, are viscous substances that allow us to make phacoemulsification easier and safer. Once the first incision is made into the eye, it has a tendency to collapse as the aqueous leaks out.
Is DuoVisc a medication?
In the US, DuoVisc is a member of the drug class ophthalmic surgical agents and is used to treat Ophthalmic Viscoelastic Agent.
Is Viscoat dispersive?
Dispersive agents include OcuCoat (Bausch + Lomb), Viscoat (Alcon), and Healon Endocoat (Abbott Medical Optics).
What is soft shell technique?
Soft-shell techniques exist for lower viscosity dispersive with higher viscosity cohesive ophthalmic viscosurgical devices (OVDs) (soft-shell technique [SST]), viscoadaptive OVDs with balanced salt solution (ultimate soft-shell technique), intraoperative floppy-iris syndrome (soft-shell bridge), and many specific …
What is viscoelastic deformation?
In materials science and continuum mechanics, viscoelasticity is the property of materials that exhibit both viscous and elastic characteristics when undergoing deformation. Viscous materials, like water, resist shear flow and strain linearly with time when a stress is applied.
What is the purpose of viscoelastic?
The major aim for the application of viscoelastic substances in cataract surgery is prevention of corneal endothelial cell loss. This aim is fulfilled by deepening of the anterior chamber, mechanical endothelium protection against surgical trauma, absorption of ultrasound energy, and coating of intraocular lens.
What is viscoelastic used for?
Viscoelastic substances often are employed in cataract surgery to protect the corneal endothelium and to facilitate intraocular lens (IOL) insertion. Sodium hyaluronate, the agent with perhaps the widest clinical use, frequently causes marked postoperative IOP elevations.
What is Ovd in cataract surgery?
Ophthalmic viscosurgical devices (OVDs), first introduced in the 1970s,1-3 are solutions of varying viscosity with pseudoplastic properties. They are used to maintain space in the eye during IOL implantation, stabilize and deepen the anterior chamber, and protect ocular structures during anterior segment surgery.
Is Viscoat cohesive or dispersive?
Alcon’s DuoVisc system consists of Viscoat (dispersive) and ProVisc (cohesive), while AMO’s combination system allows the choice of Healon D+H, which is Healon D (dispersive) and Healon (cohesive), or Healon D+GV, which is Healon D (dispersive) and Healon GV (greater viscosity cohesive).
What is Healon made from?
The Healon OVD contains 10 mg/mL of sodium hyaluronate dissolved in physiological sodium chloride phosphate buffer (pH 7.0-7.5). This high molecular weight polymer is made up of repeating disaccharide units of N-acetyl-glucosamine and sodium glucuronate linked by ß 1-3 and ß 1-4 glycosidic bonds.