purpose : to compare visual outcome of aspheric and spheric intraocular lenses (iols) implantation in patients with age-related cataract in terms of visual acuity (va), contrast sensitivity (cs) and spherical aberration methods : in this prospective randomized interventional study, 59 consecutive cases of senile cataract who had been admitted for cataract surgery to farabi eye hospital, tehran,...

In the present study, the lenses and ciliary bodies of 20 ostrich eyes were studied macroscopically and microscopically. The histological slides were studied after staining by hematoxylin and eosin, Verhoeff, Van Gieson, and periodic acid-Schiff (PAS). Posterior surface of lens was more convex than its anterior surface. The average lens diameter and thickness were respectively measured as 1.43 ...

We thank Scott Stern, Josh Lerner, and Erin Scott for thoughtful input on earlier drafts. Participants at the NBER National Press Club workshop in April 2013 offered insightful feedback. We draw inspiration from Tirole and Lerner (2002) for our title and approach to presenting the subject matter. We gratefully acknowledge funding support on our series of crowdfunding research projects from the ...

S. Ranieri, S. Boe, F. Tam, L. Gordon, T. Dawson, J. Ween, W. McIlroy, and S. J. Graham Rotman Research Institute, Baycrest Centre for Geriatric Care, Toronto, ON, Canada, Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada, Toronto Rehabilitation Institute, Toronto, ON, Canada, Faculty of Health Sciences, Queen's University, Kingston, ON, Canada, Ku...

Acknowledgments. We would like to thank Matias Braun, Vidhi Chhaochharia and seminar participants at the American Economic Association Meeting (Chicago), the Swedish Ministry of Finance, and Tilburg University for helpful comments; the Rotman International Centre for Pension Management, NETSPAR (Giannetti and Laeven), and the Jan Wallander and Tom Hedelius Foundation (Giannetti) for financial s...

Vol. XLIII (February 2006), 1–10 1 © 2006, American Marketing Association ISSN: 0022-2437 (print), 1547-7193 (electronic) *Tamar Avnet is Assistant Professor of Business, Rotman School of Management, University of Toronto (e-mail: [email protected]). E. Tory Higgins is Professor of Psychology, Department of Psychology, and Professor of Management, Columbia School of Business, Columbia U...

optical rehabilitation of the patient with aphakia who cannot tolerate contact lenses present a therapeutic challenge. in the absence of capsular support, anterior chamber lenses have been widely used. on the other hand intraocular lens implantation of scleral sutured posterior chamber intraocular lens during penterating keratoplasty or insufficient iris support is recommended. the purpose of t...

A fully integrated planar sensor for 77 GHz automotive applications is presented. The frontend consists of a transceiver multichip module and an electronically steerable microstrip patch array. The antenna feed network is based on a modified Rotman-lens and connected to the array in a multilayer approach offering higher integration. Furthermore, the frontend comprises a phase lock loop to allow...