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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

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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

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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

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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

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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

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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

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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

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Instrument Variables: Stimulus size Stimulus duration Background Luminance Presented at 6th Georgian-German School and Workshop in Basic Science, July 2014, Tbilisi, Georgia

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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

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Electric scheme of connections of light-emitting diodes Presented at 6-th Georgian-German School and Workshop in Basic Science, July 2014, Tbilisi, Georgia

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Main Switching Board with Microcontroller PIC16 F887 Presented at 6-th Georgian-German School and Workshop in Basic Science, July 2014, Tbilisi, Georgia

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Basic Scheme of Switching Device Presented at 6-th Georgian-German School and Workshop in Basic Science, July 2014, Tbilisi, Georgia

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Microcontroller PIC16 F88 Specifications Presented at 6-th Georgian-German School and Workshop in Basic Science, July 2014, Tbilisi, Georgia

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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

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Eye Pupil Movement Controlling Module

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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

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Mini PC x86 L-20Y D525 Presented at 6th Georgian-German School and Workshop in Basic Science, July 2014, Tbilisi, Georgia

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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

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10 inch touch screen monitor Presented at 6th Georgian-German School and Workshop in Basic Science, July 2014, Tbilisi, Georgia

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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

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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

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International Education Fair, Tbilisi 2014 Independence Day, Tbilisi 2014

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Presented at 6th Georgian-German School and Workshop in Basic Science, July 2014, Tbilisi, Georgia THANKS

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Presented at 6th Georgian-German School and Workshop in Basic Science, July 2014, Tbilisi, Georgia