Ocular Fundus Blood Flow Measurement Using Laser Speckle Circulation Analyzer
نویسندگان
چکیده
منابع مشابه
Ocular microtremor measurement using laser-speckle metrology.
We describe a novel, noninvasive measurement approach for recording a small involuntary tremor of the eye known as ocular microtremor. The method is based on measuring out-of-plane angular displacements of a target by using laser-speckle correlation of images recorded in the Fourier plane of a lens. The system has a dynamic range of 4 to 5000 μrad, resolution of 4 μrad, and a bandwidth of 250 H...
متن کاملReproducibility of Neonate Ocular Circulation Measurements Using Laser Speckle Flowgraphy
Measuring the ocular blood flow in neonates may clarify the relationships between eye diseases and ocular circulation abnormalities. However, no method for noninvasively measuring ocular circulation in neonates is established. We used laser speckle flowgraphy (LSFG) modified for neonates to measure their ocular circulation and investigated whether this method is reproducible. During their norma...
متن کاملOcular blood flow measurement.
Many techniques have been devised to measure the haemodynamics of the human and animal eye. In this perspective these are outlined and their use in ophthalmic investigation summarised. Some have exploited the ability of an observer to directly visualise the retinal vasculature by optical means, others have been designed to study the haemodynamics ofthe invisible parts of the eye such as the cho...
متن کاملLongitudinal changes of ocular blood flow using laser speckle flowgraphy during normal pregnancy
PURPOSE Innovative laser speckle flowgraphy (LSFG) enables noninvasive evaluation of retinal microcirculation and the usefulness has been reported in the field of ophthalmology. LSFG has allowed us to measure the real time changes of retinal blood flow without pupillary dilatations and contrast media. Herein, we investigated the change of retinal blood flow in normal pregnant women during gesta...
متن کاملOcular Blood Flow Measurements in Healthy White Subjects Using Laser Speckle Flowgraphy
PURPOSE To assess the feasibility and reliability of Laser Speckle Flowgraphy (LSFG) to measure ocular perfusion in a sample of healthy white subjects and to elucidate the age-dependence of the parameters obtained. METHODS This cross-sectional study included 80 eyes of 80 healthy, non-smoking white subjects of Western European descent between 19 and 79 years of age. A commercial LSFG instrume...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: THE JOURNAL OF JAPAN SOCIETY FOR LASER SURGERY AND MEDICINE
سال: 1997
ISSN: 0288-6200
DOI: 10.2530/jslsm1980.18.3_17