Applications of Hyaluronic Acid in Ophthalmology and Contact Lenses.

Hyaluronic acid (HA) is a glycosaminoglycan that was first isolated and identified from the vitreous body of a bull's eye. HA is ubiquitous in the soft connective tissues of animals and therefore has high tissue compatibility for use in medication. Because of HA's biological safety and water retention properties, it has many ophthalmology-related applications, such as in intravitreal injection, dry eye treatment, and contact lenses. Due to its broad range of applications, the identification and quantification of HA is a critical topic. This review article discusses current methods for analyzing HA. Contact lenses have become a widely used medical device, with HA commonly used as an additive to their production material, surface coating, and multipurpose solution. HA molecules on contact lenses retain moisture and increase the wearer's comfort. HA absorbed by contact lenses can also gradually release to the anterior segment of the eyes to treat dry eye. This review discusses applications of HA in ophthalmology.

The impact of different product formats on inaction inertia.

The inaction inertia effect describes situations in which a person rejects an opportunity after having forgone a relatively superior opportunity. This study explores whether product format (hedonic vs. utilitarian) affects the inaction inertia effect. The authors build on previous findings that show comparisons of utilitarian benefits are easier than hedonic benefits, and hedonic consumption (vs. utilitarian consumption) usually generates greater pleasure. The authors propose that people show higher inaction inertia after they have missed a superior utilitarian consumption opportunity than after they have missed a superior hedonic consumption opportunity. This prediction was tested and supported in three different experiments. Moreover, the authors found that differences in comparability between products, rather than the hedonic pleasure, explain differences in inaction inertia effects. These findings contribute to the inaction inertia literature and marketing practice.

The antecedents and belief-polarized effects of thought confidence.

This article investigates 2 possible antecedents of thought confidence and explores the effects of confidence induced before or during ad exposure. The results of the experiments indicate that both consumers' dispositional optimism and spokesperson attractiveness have significant effects on consumers' confidence in thoughts that are generated after viewing the advertisement. Higher levels of thought confidence will influence the quality of the thoughts that people generate, lead to either positively or negatively polarized message processing, and therefore induce better or worse advertising effectiveness, depending on the valence of thoughts. The authors posit the belief-polarization hypothesis to explain these findings.