USE OF A NOVEL EXTENDED BLINK TEST TO EVALUATE THE PERFORMANCE OF TWO POLYVINYLPYRROLIDONE-CONTAINING, SILICONE HYDROGEL CONTACT LENSES

Use of a novel extended blink test to evaluate the performance of two polyvinylpyrrolidone-containing, silicone hydrogel contact lenses

Jeffery Schafer,1 William Reindel,1 Robert Steffen,1 Gary Mosehauer,1 Joseph Chinn2 1Vision Care, Bausch and Lomb Incorporated, Rochester, NY, USA; 2J Chinn LLC, Lafayette, CO, USA Background: Sustained digital display viewing reduces eye blink frequency and tear film stability.To retain water and preserve a smooth optical surface, contact lens man

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Ecological correlates of extinction risk and persistence of direct-developing stream-dwelling frogs in Mesoamerica

Understanding the threats to wildlife across space and time is essential for developing effective conservation strategies.In Mesoamerica (i.e., the region that extends from Central Mexico to the most southern point in Panama) at least 40% of amphibian species declined between the late 1970s and the early 2000s.Most of these declines Bandanas have b

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Degradation of Sub-Micrometer Sensitive Polymer Layers of Acoustic Sensors Exposed to Chlorpyrifos Water-Solution

The detection of organophosphates, a wide class of pesticides, in water-solution has a huge impact in environmental monitoring.Acoustic transducers Sweetner are used to design passive wireless sensors for the direct detection of pesticides in water-solution by using tailored polymers as sensitive layers.We demonstrate by combining analytical chemis

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