WITH a correctly fitting pair of approximately -14 D. corneal contact lenses, a person with normal emmetropic eyes can become a 12 D. experimental hyperope, and he can very nearly simulate the exact type of vision of the spectacle-corrected aphakic by wearing a correctly fitted set of + 12-00 D. Sph. cataract spectacle lenses. With this "simulator of aphakia", the inquisitive scientific researc...

The measured values of the axial meridional powers for 311 spectacle lenses are reported. The spherical refractive powers range from + 7 . 0 0 to —20.00 diopters with cylindrical powers of 0.00, 1.00, and 2.00 diopters. The departures of the measured from the nominal values are shown. The probable errors of measurement are discussed. A set of tolerance values is suggested and the degree of comp...

PURPOSES To evaluate the optical performance of blue-light filtering spectacle lenses and investigate whether a reduction in blue light transmission affects visual performance and sleep quality. METHODS Experiment 1: The relative changes in phototoxicity, scotopic sensitivity, and melatonin suppression of five blue-light filtering plano spectacle lenses were calculated based on their spectral...

Dear Editor: In comparing multifocal to monofocal intraocular lenses implanted to create monovision, Wilkins et al graciously recognized me as the first to publish on the use of full ( 2.75 diopters in the near eye) monovision. However, the statement that only 1 previous study of monovision in cataract surgery has reported overall spectacle independence as an outcome measure misses the point of...

OBJECTIVE To study the effect of myopia and spectacle wear on bicycle-related injuries in rural Chinese students. Myopia is common among Chinese students but few studies have examined its effect on daily activities. METHODS Data on visual acuity, refractive error, current spectacle wear, and history of bicycle use and accidents during the past 3 years were sought from 1891 students undergoing...

The materials that have been reported as causing allergic contact dermatitis within spectacle frames are identified, and their most likely location on the frame is highlighted. The lack of any real control over spectacle frame quality and content is indicated to be a problem, as is the difficulty in determining the true source of many frames. Much of the information must be obtained from anonym...

Beyond the Spectacle of Apologia Villadsen, Lisa Storm Published in: Quarterly Journal of Speech DOI: 10.1080/00335630.2012.663501 Publication date: 2012 Document Version Early version, also known as pre-print Citation for published version (APA): Villadsen, L. S. (2012). Beyond the Spectacle of Apologia: Official Apologies as Proto-Deliberative Rhetoric and Instantiations of Rhetorical Citizen...

This single group cohort study, undertaken at Aga Khan University Hospital, Karachi, from Jan 2012 to September 2013, assessed patients' satisfaction, spectacle independence and visual disturbance after implantation of multifocal IOLs. A total of 39 patients who underwent bilateral cataract surgery with multifocal IOL implantation were included for telephonic interviews. The mean age of partici...

PURPOSE To study the prevalence and determinants of compliance with spectacle wear among school-age children in Oaxaca, Mexico, who were provided spectacles free of charge. METHODS A cohort of 493 children aged 5 to 18 years chosen by random cluster sampling from primary and secondary schools in Oaxaca, Mexico, all of whom had received free spectacles through a local program, underwent unanno...