نتایج جستجو برای: optic effect

تعداد نتایج: 1682311  

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 1994
S K Kostyk P A D'Amore I M Herman J A Wagner

Basic fibroblast growth factor (bFGF) is thought to be a trophic factor for several classes of neurons. Its distribution changes in response to cortical neural injury. We have determined the effect of injury to the optic nerve on localization of bFGF in the rodent retina and visual pathways. Our observations were confirmed by using different antisera and monoclonal antibodies. While photorecept...

2003
S D McLeod

Aim: To design an accommodating intraocular lens with extended accommodative range that can be adapted to current standard phacoemulsification and endocapsular implantation technique. Method: Ray tracing analysis and lens design; cadaver eye implantation. Results: Ray tracing analysis indicated that axial movement of an exaggerated converging anterior optic linked by spring loaded haptics to a ...

Journal: :The European physical journal. E, Soft matter 2009
M Gross M Lesaffre F Ramaz P Delaye G Roosen A C Boccara

We propose an original adaptive wavefront holographic setup based on the photorefractive effect (PR), to make real-time measurements of acousto-optic signals in thick scattering media, with a high flux collection at high rates for breast tumor detection. We describe here our present state of the art and understanding on the problem of breast imaging with PR detection of the acousto-optic signal.

Journal: :Bulletin of the Chemical Society of Japan 1971

2017
Orie Nakamura Satoru Moritoh Kota Sato Shigeto Maekawa Namie Murayama Noriko Himori Kazuko Omodaka Tetsuya Sogon Toru Nakazawa

PURPOSE To investigate the effect of bilberry extract anthocyanins on retinal ganglion cell (RGC) survival after optic nerve crush. Additionally, to determine details of the mechanism of the neuroprotective effect of bilberry extract anthocyanins and the involvement of endoplasmic reticulum stress suppression in the mouse retina. MATERIALS AND METHODS Anthocyanins in bilberry extract (100 mg/...

Journal: :Journal of sport & exercise psychology 2012
David Parry Camilla Chinnasamy Dominic Micklewright

Optic flow on the retina creates a perception of a person's movement relative to their surroundings. This study investigated the effect of optic flow on perceived exertion during cycling. Fifteen participants completed a 20-km reference cycling time trail in the fastest possible time followed by three randomly counterbalanced 20-km cycling trials. Optic flow, via projected video footage of a cy...

1989
G. Pauliat A. Villing J. C. Launay

Photorefractive crystals exhibit large optical nonlinearities1 and have great potential in optical data processing.2 The extrinsic photorefractive effect in these electro-optic and photoconductive materials is rather well understood. The band-transport model' has been successfully employed to describe photorefraction in crystals such as the sillenite compounds, Bi12SiO2 0 and Bi12GeO 2 0 (BGO)....

1986
Peter A. Rowe W. Peter Gorman

A case report of transverse myelitis and optic neuritis is presented in which the latter occurred following a myelogram with iopamidol. The literature relating to neurotoxicity of contrast agents is reviewed, and it is suggested that the optic neuritis may have been a neurotoxic effect

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