Centration and Decentration of Contact Lenses during Peripheral Gaze

Optical Modeling and Analysis of Peripheral Optics of Contact Lenses

Background: Degraded peripheral vision has been hypothesized to be a stimulus for the development of foveal refractive error. Contact lenses have been widely used to correct central vision, but their impacts on peripheral vision are still unknown. The purpose of this study was to use optical model software to evaluate the peripheral optics of rigid gas permeable (RGP) and soft contact lenses (S...

Evaluating the peripheral optical effect of multifocal contact lenses.

PURPOSE Multifocal soft contact lenses have been used to decrease the progression of myopia, presumably by inducing relative peripheral myopia at the same time as the central image is focused on the fovea. The aim of this study was to investigate how the peripheral optical effect of commercially available multifocal soft contact lenses can be evaluated from objective wavefront measurements. M...

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Insincere utterances and gaze: eye contact during sarcastic statements.

Anecdotal evidence suggests that speakers often gaze away from their listeners during sarcastic utterances; however, this question has not been directly addressed empirically. This study systematically compared gaze-direction of speakers in dyadic conversation when uttering sincere and sarcastic statements. 18 naïve participants were required to recite a series of contradictory statements on a ...

Corneal epithelial permeability during extended wear of disposable contact lenses versus daily wear of soft contact lenses.

AIMS The corneal epithelial permeability during extended wear of disposable contact lenses was compared with that during daily wear of soft contact lenses. The study was performed to verify whether the extended wear of disposable contact lenses would result in a higher permeability value than the daily wear of soft contact lenses. A higher permeability makes the cornea more vulnerable for bacte...