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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

D - Stať ve sborníku

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

—

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of SPIE, Volume 9540

ISBN

9781628417050

ISSN

—

e-ISSN

—

Počet stran výsledku

6

Strana od-do

"954006"-"954006-6"

Název nakladatele

Neuveden

Místo vydání

Neuveden

Místo konání akce

Munich

Datum konání akce

21. 6. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000359602700002