Laser Doppler instrument to investigate retinal neural activity-induced changes in optic nerve head blood flow

被引：13
|
作者：
Logean, E [1 ]
Geiser, MH
Riva, CE
机构：
[1] Inst Rech Ophtalmol, CH-1950 Sion, Switzerland
[2] Haute Ecole Valaisanne, CH-1950 Sion, Switzerland
来源：
OPTICS AND LASERS IN ENGINEERING | 2005年 / 43卷 / 3-5期
关键词：
retinal neural activity; ocular circulation; laser Doppler flowmetry; optic nerve head; flicker stimulation;
D O I：
10.1016/j.optlaseng.2004.04.011
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A fundus camera-based instrument to investigate increased retinal neuronal activity effect on optic nerve blood flow is described. It incorporates (a) near infrared fundus illumination and observation, (b) near infrared laser Doppler flowmeter (LDF), (c) pupil position monitoring and (d) delivery of visual stimuli. Two types of stimulation are currently used: diffuse heterochromatic and chromatic luminance flicker generated by light emitting diodes, and contrast reversal pattern displayed on a video monitor. Recordings of the changes in the LDF parameters (blood velocity, volume and flow) from the optic nerve in response to these stimuli illustrate the potential of the technique. (c) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：591 / 602
页数：12
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