PROPERTIES AND ADVANCES IN APPLICATIONS OF OPHTHALMIC VISCOSURGICAL DEVICES
FATMA ADEL ABDALLAH ELSAYED SERAG;
Abstract
Ophthalmic visco-surgical devices (OVDs) are group of materials with viscoelastic properties and wide range of chemical and other rheological properties, yielding in; many patents that have been widely used in ophthalmology.
They could be differentiated according to the substance used, its molecular weight and concentration. Good orientation by these properties and by the procedure needs, allows the ophthalmologist to choose the proper OVD for each procedure or step included.
The combined properties of these materials made them provide: tissue protection, cushion effect, creation and maintenance of spaces, gentle separation and manipulation of tissues, lubrication, tamponade, smoothening and regulation of surfaces, clarity and assistance in viewing systems, reduction of postoperative adhesions, even a helpful vehicle in effective drug delivery systems and cell culture, as well asassistance in wound healing.
That is why they are used in different ophthalmological fields; within the eye and on the surface of the eye to prevent dryness, facilitate wound healing, and as a coupling agent in diagnostic and interventional procedures, along with the surgical applications as in different corneal surgeries like refractive and therapeutic corneal interventions, different cataract extraction and/ or IOL implantation surgeries, different glaucoma surgeries, surgical repair of trauma and other anterior segment procedures,different vitreo-retinal procedures, oculo-plastic and muscle surgery procedures, as well as to other experimental uses and production of ophthalmic drug delivery systems.
Best use of OVDs is achieved through orientation by their properties, including, their undesired ones and how to avoid it. Careful selection of the appropriate material, gentle and cautious techniques, and considering the optimum needs for each step; can achieve the ophthalmologist ultimate goal.
They could be differentiated according to the substance used, its molecular weight and concentration. Good orientation by these properties and by the procedure needs, allows the ophthalmologist to choose the proper OVD for each procedure or step included.
The combined properties of these materials made them provide: tissue protection, cushion effect, creation and maintenance of spaces, gentle separation and manipulation of tissues, lubrication, tamponade, smoothening and regulation of surfaces, clarity and assistance in viewing systems, reduction of postoperative adhesions, even a helpful vehicle in effective drug delivery systems and cell culture, as well asassistance in wound healing.
That is why they are used in different ophthalmological fields; within the eye and on the surface of the eye to prevent dryness, facilitate wound healing, and as a coupling agent in diagnostic and interventional procedures, along with the surgical applications as in different corneal surgeries like refractive and therapeutic corneal interventions, different cataract extraction and/ or IOL implantation surgeries, different glaucoma surgeries, surgical repair of trauma and other anterior segment procedures,different vitreo-retinal procedures, oculo-plastic and muscle surgery procedures, as well as to other experimental uses and production of ophthalmic drug delivery systems.
Best use of OVDs is achieved through orientation by their properties, including, their undesired ones and how to avoid it. Careful selection of the appropriate material, gentle and cautious techniques, and considering the optimum needs for each step; can achieve the ophthalmologist ultimate goal.
Other data
| Title | PROPERTIES AND ADVANCES IN APPLICATIONS OF OPHTHALMIC VISCOSURGICAL DEVICES | Authors | FATMA ADEL ABDALLAH ELSAYED SERAG | Issue Date | 2015 |
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