Giorgi Gigilashvili, PhD student at Deparment of Biomedical Engineering, Georgian Technical...
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Giorgi Gigilashvili, PhD student at Deparment of Biomedical Engineering, Georgian Technical University Supervisor: Prof. Zviad Gurtskaya Presented at 6th
Giorgi Gigilashvili, PhD student at Deparment of Biomedical
Engineering, Georgian Technical University Supervisor: Prof. Zviad
Gurtskaya Presented at 6th Georgian-German School and Workshop in
Basic Science, July 2014, Tbilisi, Georgia
Slide 2
1945 First perimeter system designed by Goldmann 1970 Octopus
perimeter was first introduced 1982 Humphrey field analyzer
displayed at AAO 1983 First clinical trials showed by Michael
Patella 1984 Became popular in clinical environment Presented at
6th Georgian-German School and Workshop in Basic Science, July
2014, Tbilisi, Georgia
Slide 3
Perimetry is the measurement of visual functions of the eye at
topographically defined centers in the visual field Presented at
6th Georgian-German School and Workshop in Basic Science, July
2014, Tbilisi, Georgia
Slide 4
Glaucomatous field defects Chorioretinal lesions Optic disc
lesions Optic nerve lesions Neuro-ophtalmic lesions Presented at
6th Georgian-German School and Workshop in Basic Science, July
2014, Tbilisi, Georgia
Slide 5
Visual field can be charted by using kinetic and/or static
techniques with instruments that are operated either manually or
automatically (computerized) Presented at 6th Georgian-German
School and Workshop in Basic Science, July 2014, Tbilisi,
Georgia
Slide 6
Kinetic Perimetry (Manual) Stimulus is moved from a non-seeing
area to seeing area to the point at which it is firstly observed by
the patient in relation to fixation point. The operator selects the
stimulus (target), size and intensity, moves the target from
periphery close to central area of eyesight, monitors patient eye
fixation. Presented at 6th Georgian-German School and Workshop in
Basic Science, July 2014, Tbilisi, Georgia
Slide 7
Static Perimeter Computerized Static technique involves the
presentation of static test objects Static method represents an on
off technique during which each stimuli is presented to the patient
for the duration of 0.5-1 second and the points (targets) which
patient failed to detect are recorded. Presented at 6th
Georgian-German School and Workshop in Basic Science, July 2014,
Tbilisi, Georgia
Slide 8
Instrument Variables: Stimulus size Stimulus duration
Background Luminance Presented at 6th Georgian-German School and
Workshop in Basic Science, July 2014, Tbilisi, Georgia
Slide 9
Slide 10
Slide 11
Hemisphere Control module for stimuli presentation Diagnostic
module Patient gaze fixation control module Presented at 6-th
Georgian-German School and Workshop in Basic Science, July 2014,
Tbilisi, Georgia
Slide 12
Electric scheme of connections of light-emitting diodes
Presented at 6-th Georgian-German School and Workshop in Basic
Science, July 2014, Tbilisi, Georgia
Slide 13
Main Switching Board with Microcontroller PIC16 F887 Presented
at 6-th Georgian-German School and Workshop in Basic Science, July
2014, Tbilisi, Georgia
Slide 14
Basic Scheme of Switching Device Presented at 6-th
Georgian-German School and Workshop in Basic Science, July 2014,
Tbilisi, Georgia
Slide 15
Microcontroller PIC16 F88 Specifications Presented at 6-th
Georgian-German School and Workshop in Basic Science, July 2014,
Tbilisi, Georgia
Slide 16
Eye Pupil Movement Controlling Module (Gaze fixation monitoring
module) Monitoring and control of eye pupil movement is performed
by built in video camera Coordinates of eye pupil location during
the start of examination are stored in the database During the
examination process eye pupil location is constantly compared to
stored data to discern eye movement Fixation is also tested by
mapping of the blind spot Presented at 6th Georgian-German School
and Workshop in Basic Science, July 2014, Tbilisi, Georgia
Slide 17
Eye Pupil Movement Controlling Module
Slide 18
Modification and upgrade of current computed perimetry system
Integrated PC Integrated touch screen monitor Presented at 6th
Georgian-German School and Workshop in Basic Science, July 2014,
Tbilisi, Georgia
Slide 19
Mini PC x86 L-20Y D525 Presented at 6th Georgian-German School
and Workshop in Basic Science, July 2014, Tbilisi, Georgia
Slide 20
Mini PC Specifications: Presented at 6th Georgian-German School
and Workshop in Basic Science, July 2014, Tbilisi, Georgia CPUINTEL
D525 ATOM Dual core 1.8 MHz RAMDDR3 SO-DIMM (2GB) Dimension19.7 X
19.7 X 4cm GraphicsIntegrated intel3150(GMA3150)graphics Hard
Drive128 GB Resolution1366x786, 1024x600, 800x600, 640x480
Weight2.5 KG Supported OSWIN7, Linux, Windows XP, Ubuntu,Debian I/O
Ports:4 x USB, VGA, MIC, SPK, RJ45 LAN RS232YES WIFIYES
Slide 21
10 inch touch screen monitor Presented at 6th Georgian-German
School and Workshop in Basic Science, July 2014, Tbilisi,
Georgia
Slide 22
Mini PC Specifications: Presented at 6th Georgian-German School
and Workshop in Basic Science, July 2014, Tbilisi, Georgia Scren
size10 Inch ColorMulticolor Screen Ratio:4 X 3 Touch signal
inputRS232 or USB Touch sensibility>3mm Response Time< 16 mS
Optimal resolution1024 x 768, 800 x 600 Brightness350 cd/m 2 Signal
inputDVI or VGA
Slide 23
Advantages of Computed Perimetry System for Visual Field
Testing The data is quantifiable, reproducible and amenable for
statistical manipulation An automated technology reduces the need
for highly trained technicians/operators Elimination of outcomes of
possible subjectivity of perimetrist and/or patient Automated
perimetry is more accurate and informative Presented at 6th
Georgian-German School and Workshop in Basic Science, July 2014,
Tbilisi, Georgia
Slide 24
International Education Fair, Tbilisi 2014 Independence Day,
Tbilisi 2014
Slide 25
Presented at 6th Georgian-German School and Workshop in Basic
Science, July 2014, Tbilisi, Georgia THANKS
Slide 26
Presented at 6th Georgian-German School and Workshop in Basic
Science, July 2014, Tbilisi, Georgia