Non-mydriatic video ophthalmoscope to measure fast temporal changes of the human retina

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F15%3APU116130" target="_blank" >RIV/00216305:26220/15:PU116130 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1117/12.2181183" target="_blank" >http://dx.doi.org/10.1117/12.2181183</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1117/12.2181183" target="_blank" >10.1117/12.2181183</a>

Result language
angličtina
Original language name
Non-mydriatic video ophthalmoscope to measure fast temporal changes of the human retina
Original language description
The analysis of fast temporal changes of the human retina can be used to get insight to normal physiological behavior and to detect pathological deviations. This can be important for the early detection of glaucoma and other eye diseases. We developed asmall, lightweight, USB powered video ophthalmoscope that allows taking video sequences of the human retina with at least 25 frames per second without dilating the pupil. Short sequences (about 10 s) of the optic nerve head (20° x 15°) are recorded fromsubjects and registered offline using two-stage process (phase correlation and Lucas-Kanade approach) to compensate for eye movements. From registered video sequences, different parameters can be calculated. Two applications are described here: measurement of (i) cardiac cycle induced pulsatile reflection changes and (ii) eye movements and fixation pattern. Cardiac cycle induced pulsatile reflection changes are caused by changing blood volume in the retina. Waveform and pulse parameters
Czech name
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Czech description
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Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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