Rheological and Adhesive Properties to Identify Cohesive and Dispersive Ophthalmic Viscosurgical Devices
نویسندگان
چکیده
منابع مشابه
Endotoxins in ophthalmic viscosurgical devices.
PURPOSE To measure the endotoxin concentration (EC) of 25 commercially available, hyaluronic acid- and hydroxypropylmethylcellulose-based (HPMC) ophthalmic viscosurgical devices (OVDs). METHODS The in vitro Limulus amebocyte lysate (LAL) assay, which indicates the presence of endotoxins originating from gram-negative bacteria, was used to determine the EC. The procedure was performed accordin...
متن کاملAdvances in ophthalmic viscosurgical devices in phacoemulsification
Charles Kelman performed the first phacoemulsification (PHACO) procedures in the posterior chamber, but because he wanted surgeons to rapidly learn the technique, he chose to luxate the lens into the anterior chamber, where there was always the risk of endothelial damage if viscoelastic substances (VESs) were not used.1 In the mid-80s, with the improvement of phacoemulsifiers and the introducti...
متن کاملPrefilled syringes and usability of ophthalmic viscosurgical devices
PURPOSE To examine the influence of the configuration of prefilled syringes on the usability of ophthalmic viscosurgical devices (OVDs). SETTING Department of Ophthalmology, Jikei University School of Medicine, Tokyo, Japan. DESIGN Experimental study. METHODS The maximum force needed to extrude the whole OVD (extrusion force) was compared among viscous cohesive OVDs (OPEGAN Hi(®) 0.85 mL ...
متن کاملcohesion and cohesive devices in a contrastive analysis between ge and esp texts
the present study was an attempt to conduct a contrastive analysis between general english (ge) and english for specific purposes (esp) texts in terms of cohesion and cohesive devices. to this end, thirty texts from different esp and ge textbooks were randomly selected. then they were analyzed manually to find the frequency of cohesive devices. cohesive devices include reference, substitution, ...
15 صفحه اولComparative evaluation of efficacy and safety of ophthalmic viscosurgical devices in phacoemulsification [ISRCTN34957881]
BACKGROUND Various ophthalmic viscosurgical devices (OVD) are used to perform phacoemulsification and other intraocular surgeries. We performed a study to compare the efficacy and safety of three ophthalmic viscosurgical devices that are routinely used in phacoemulsification. METHODS Fifty-six patients of immature senile cataract with hard nucleus (grade 3 and 4) who underwent phacoemulsifica...
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ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 2019
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.c18-00890