Janice Tarrant

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The purpose of this study was to evaluate some of the methods used to calculate objective refractions from wavefront aberrations, to determine their applicability for accommodation research. A wavefront analyzer was used to measure the ocular aberrations of 13 emmetropes and 17 myopes at distance, and 4 near target vergences: 2, 3, 4, and 5 D. The(More)
PURPOSE To assess the effect of bifocal soft contact lenses on the accommodative errors (lags) of young adults. Recent studies suggest that bifocal soft contact lenses are an effective myopia control treatment although the underlying mechanism is not understood. METHODS Accommodation responses were measured for four target distances: 100, 50, 33 and 25 cm(More)
The international Muon Ionization Cooling Experiment (MICE), which is under construction at the Rutherford Appleton Laboratory (RAL), will demonstrate the principle of ionization cooling as a technique for the reduction of the phase-space volume occupied by a muon beam. Ionization cooling channels are required for the Neutrino Factory and the Muon Collider.(More)
A. Abdesselam,y P.P. Allport,o B. Anderson,r L. Andricek,u F. Anghinolfi,e R.J. Apsimon,ac T. Atkinson,t A. Austin,ac H. Band,v P. Barclay,ac A. Barr,y L.E. Batchelor,ac R.L. Bates, j J.R. Batley,d G. Beck,q H. Becker,u P. Bell,s W.H. Bell, j A. Belymam,q J. Beneš,aa P. Beneš,ab E. Berbee,v J. Bernabeu,ak S. Bethke,u N. Bingefors,a j J.P. Bizzell,ac Z.J.(More)
Myopic observers may not benefit to the same extent as emmetropes from adaptive optics (AO) correction in a visual acuity (VA) task. To investigate this, we measured AO-corrected VA in 10 low myopes and 9 emmetropes. Subjects were grouped by refractive error. Mean spherical equivalent refractive error was -2.73 D (SEM = 0.35) for the myopes and 0.04 D (SEM(More)
PURPOSE To investigate the role of higher order optical aberrations and thus retinal image degradation in the development of myopia, through the characterization of anisomyopia in human adults in terms of their optical and biometric characteristics. METHODS The following data were collected from both eyes of 15 young adult anisometropic myopes and 16(More)
A novel single-particle technique to measure emittance has been developed and used to characterise seventeen different muon beams for the Muon Ionisation Cooling Experiment (MICE). The muon beams, whose mean momenta vary from 171 to 281 MeV/c, have emittances of approximately 1.2–2.3 π mm-rad horizontally and 0.6– 1.0 π mm-rad vertically, a horizontal(More)
M. Bogomilov, R. Tsenov, G. Vankova-Kirilova, Y. Song, J. Tang, Z. Li, R. Bertoni, M. Bonesini, F. Chignoli, R. Mazza, V. Palladino, A. de Bari, G. Cecchet, D. Orestano, L. Tortora, Y. Kuno, S. Ishimoto, F. Filthaut, D. Jokovic, D. Maletic, M. Savic, O. M. Hansen, S. Ramberger, M. Vretenar, R. Asfandiyarov, A. Blondel, F. Drielsma, Y. Karadzhov, G.(More)
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