Magic Tool to deal with small pupil during phacoemulsification surgery without rings or hooks скачать в хорошем качестве

Magic Tool to deal with small pupil during phacoemulsification surgery without rings or hooks

Healon is a sodium hyaluronate which is a sterile, nonpyrogenic, viscoelastic preparation of a highly purified, noninflammatory, high molecular weight fraction of sodium hyaluronate. Sodium hyaluronate is a physiological substance that is widely distributed in the extracellular matrix of connective tissues in both animals and man. For example, it is present in the vitreous and aqueous humor of the eye, the synovial fluid, the skin and the umbilical cord. Sodium hyaluronates prepared from various human and animal tissues are not chemically different from each other. It can be prepared from bacteria as well. Healon is developed as an ophthalmosurgical aid for use in surgery. It is specific in that: it has a high molecular weight; it is reported to be nonantigenic; it does not cause inflammatory or foreign body reactions; it has a high viscosity; it is transparent. Healon GV is a cohesive Ophthalmic Viscosurgical Device OVD which contains 1.4% of sodium hyaluronate. This high molecular weight polymer is made up of repeating disaccharide units of N-acetylglucosamine and sodium glucuronate linked by b 1-3 and b 1-4 glycosidic bonds. Volume is 0.55 to 0.85 mL, Viscosity2,500,000 cps, Molecular Weight is5,000,000 Da It contains a specific high molecular weight fraction of sodium hyaluronate developed as an ophthalmosurgical aid for use in anterior segment procedures. It is specific in that it has a super high viscosity, it is highly elastic and it does not cause inflammatory or foreign body reactions. It protects corneal endothelial cells and other ocular structures. It does not interfere with epithelialization and normal wound healing. Indications & Clinical Uses: The principle intended use for Healon is as an ophthalmosurgical aid in various anterior segment procedures, such as intra- and extra capsular cataract surgery, intraocular lens (IOL) implantation, keratoplasty, glaucoma surgery and post-trauma surgery. It has also been used successfully as a vitreous replacement after vitrectomy and retinal detachment surgery. In surgical procedures in the anterior segment of the eye, it serves to maintain a deep anterior chamber during surgery, allowing for more efficient manipulation with less trauma to the corneal endothelium, iris and other surrounding tissues. It maintains the anterior chamber during cataract surgery in eyes at risk for high vitreous pressure, shallow AC or small pupil. After capsulorhexis, mean anterior chamber depth (distance of the corneal apex to the iris plane) was significantly greater using Healon GV. Due to its viscoelasticity, it can be used to manoeuvre and control tissues and in this video you can see how it maintains dilating the small pupil throughout the surgery. HEALON 5 is a viscoadaptive OVD, that combines the best features of both our dispersive and cohesive OVDs. Designed for safety and control during phacoemulsification and precision lens implantation, the HEALON 5 delivers outstanding protection every step of the way. It behaves as both a dispersive and cohesive. •Cohesive properties provide space creation and anterior chamber maintenance •Dispersive properties deliver outstanding endothelial cell protection during phaco •Helps to ensure safe and precise capsulorhexis, phacoemulsification and lens placement •Volume: 0.60 ml, Viscosity: 3.10 - 4.10 Log (Pas), Composition: 2.3% sodium hyaluronate, Molecular Weight: 3,200,000 Da Contra-Indications: At present, there are no known contraindications to the use of healon. Undesirable effects: if not completely removed, may result in rise of IOP postoperatively and slight Myopic shift.