FREY ADVANCED VISUAL FIELD ANALYZER
AP-50
AP-50 is a desktop model, lightweight and fully featured modern static automated perimeter ideal for glaucoma diagnosis and specific requirements of occupational medicine and busy mobile clinicians. AP-50 uses LED back projection of stimulus in white color, and offers a wide range of strategies, test fields and reach set of test parameters to assure quick and precise measurement. Control of fixation is performed automatically using the built-in camera or by controlling the position of the blind spot. Built-in data analysis include regression analysis and standardized ways of presenting and printing examination results. Perimeter AP-50 can work with any PC computer running the Windows operating system.
AP-50 DETAILS
Elliptically shaped measurement bowl realizes significantly reduces size of the device yet diagnostic value of AP-50 is comparable to full field perimeters. Full central 30 degree of patient vision with extension to 50 degree temporally allows precise test nasal step where early glaucoma often commences early in the disease progression.
AP-50 dimensions of only 548 x 382 x 450 mm and weight only 9kg makes the device an ideal desk top clinical tool which can be easily transported, set up and installed anytime, anywhere including remote sites.
Elliptically shaped measure-ment bowl requires lower test room illumination conditions. Electronically controlled back-ground illumination assures stable measurement condi-tions.
Standard test fields like Central 30, Central 24, Macula are available all allow for easy data comparison with other perimeter systems. Precise testing in nasal step dedicated glaucoma tests are included.
AP-50 fulfils specific visual field testing requirements for drivers and occupational medicine. Measurement range covers up to 160 degrees temporally, and both eyes can be tested simultaneously.
| AP-50 TECHNICAL SPECIFICATION | |||||||||
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Device type |
Automated perimeter |
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Measurement bowl type |
Hemispherical 300mm radius with difusive surface
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Maximum temporal range (degrees) |
80° |
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Stimulus |
White-on-white |
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Stimulus duration |
0.1 – 9.9s |
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Stimulus size |
III |
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Stimulus intensity |
0.03asb to 10000asb |
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Visual field testing distance
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30cm |
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Background illumination |
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Fixation control |
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Test models |
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Test field library |
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Correction glass diameter
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38mm
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Chinrest |
Electrically driven in horizontal and vertical axis
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Computer |
Touch screen support
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Printer |
External or network printer
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Additional software features
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Dimensions |
Height: 382 mm |
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Weight |
9kg |
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Power requirements
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Voltage 110-230VAC Power 65W |
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User interface of Perimetry application is designed to suport efficient work with minimum time spent on switching between options. It’s ergonomy and simplicity assures short learning time for the operator. The application is ready to be operated with use of touch screen or with mouse and keyboard depending on user preferences.
Regression analysis module allows user to track changes in field of vision in time, using easy for interpenetration graphs. Multiple examination results of the same patient can be used for the analysis. Regression curves can be presented i absolute dB values, in relation to hill of vision or age normative values or particular global parameters like PD or AD. Analysis of the data can be limited to particular area of vision field like periphery or center, or can cover entire tested field of vision.
To better visualize possible vision field defects user has reach set of data presentation modes available to choose from. Result maps can be displayed as:
– numeric values, pattern grade or grey scale
– absolute values in dB, as relative to hill of vision, age normal related, defect probability
– defect curve (Bebie graph)
– normalized vales
For better operation efficiency quick access menu reduces number of parameters required to be entered before examination may start. User can predefined it’s test types, then operator has to select or enter patient data only. This function reduces overall test time and introduces standardization to test procedures.
Automatic backup file generator frees the operator for creating copies of examination data. Auto-backup function can start automatically with period and in location defined by the user. This function assures safety of patient records.
Export/Import module of Perimeter software is designed to allow the user transfer examination data between remote locations. Data may be exported in proprietary format or in compatible with EMR systems DICOM format. You can migrate easily examination data to AP-250/AP-250BY from HFA device. Import function accepts files stored in .xml and .pdf formats.
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