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AP-300 VISUAL FIELDS ANALYSER

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Manufacturer: FREY
Product code: VFAP300

The AP-300 Visual Fields Analyser is a modern and innovative automated device, meeting global standards for excellence in the testing, diagnosis and management of eye and neurological disease.

 

It reliably delivers visual field testing for your clinical practice and excellence in patient care. It is an essential part of the diagnostic toolbox in glaucoma, retina and neuro ophthalmic practice.

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The AP-300 is an advanced platform with patient-centered functionality. This single platform combines the latest in Kinetic and Static Perimetry, including white perimetry, SWAP and Flicker perimetry for early glaucoma detection, plus real Goldman kinetic perimetry. This spectrum of functionality offers tailored personalised testing for the patient and the clinician.

Complete test and data analysis system

The AP-300 combines the features of static and kinetic parameters, offering a rich set of diagnostic techniques. Advanced application software provides unique functions analysis of patient results, making diagnosis easier and faster. Standard presentation of patient perimetry results allow the user to print a single test and present clinical changes in the visual field over time.​

 

Kinetic perimetry

Kinetic perimetry is performed using stimuli of varying size, colour, intensity and speed of movement (according to the standard adopted for kinetic perimetry). A single test can consist of up to 8 isopters. For each isopter, individual stimuli parameters can be assigned, which broaden and enhance diagnostic range, enabling an improved clinical assessment.

 

Blue-on-Yellow static perimetry

Blue-On-Yellow Static Perimetry, presented by blue stimulus size V by Goldmann on a yellow background, enhances earlier diagnosis of glaucoma. A rich library of built-in test fields and strategies improves accuracy of diagnosis and documents changes in the field of view of the patient over time.

 

Static perimetry

The AP-300 can perform tests using static stimulus of different size and color. The stimulus can vary from size I to V according to Goldmann standard for white, blue, green or red. 

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Test fields

Tests can be performed within standard testing area covering various ranges of angular field of view (up to 80 degrees for one eye). There are fields with concentric arrangement stimuli (i.e. Macula, 22 °, 30 °, 50 °, driving Wide, Glaucoma, Peripheral) or the rectangular system (i.e. 10-2, 24-2, 30-2). The built-in editor allows the user to define specific tests of the test field. It is also possible to test the central vision (optional Fovea).

 

Targeted perimetry

This unique technology allows the user to load previous fundus images and select the area requiring investigation, to focus the perimetry examination on the designated area. This technology allows for faster and more accurate examination of the area of interest.

 

Pattern calibration

Patients with large defects in the visual field, or fields significantly deviating from the standard perimeter examination, can experience fatigue due to length of the examination. Pattern calibration is designed to improve the comfort of these patients and significantly reduces examination time. Pattern calibration technique can reduce examination time significantly by more than five minutes.

 

Installation flexibility

The AP-300 can be used in both small practices and large clinics. With built-in networking capabilities, installation of the device is very easy with system expansion economical. The AP-300 can easily communicate with devices connected directly or network printers and servers. The perimeter software can be installed on any number of computers, allowing users to organise efficient and effective patient workflow.

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Test result presentation

The resulting sensitivity of the field of view can be presented in many forms, including numerical grey scale, scale, colour, scale, dot or a 3D map. Presentations can represent absolute values in decibels, hill view, deviations from the standard age and curve defect (Bebie). The AP-300 software allows the user to print the results in the form of a standard map 7 in 1, or various other formats.

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Strategies and test parameters

Strategies include fast screening (Screening, Neurological), accurate strategies threshold (Threshold, Fast Threshold, Smart Threshold) and a number of additional strategies (Constant, Zone 2, Zone 3, Quantify Defect, Binocular, strategies binocular drivers). The accuracy and clinical relevance of examination results can be significantly affected by patient fatigue. The AP-300 software uses advanced algorithms to allow shortened examination times, while maintaining accuracy and clinical relevance.


The AP-300 has two mechanisms of fixation control. Heijl-Krakau is a classic method that checks the blind spot position by assessing a total of 11 points randomly to ensure that the position of the eye is correct. AP-300 also facilitates fixation analysis with the use of a video camera that allows the pupil to be constantly monitored. The advantage of this method is that it rejects the patient's responses if there is no fixation. Reliable automated fixation control supports the patient and clinician with a built-in camera and automated eye tracking. This increases the repeatability and reliability of the data capture.

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  • Intuitive user interface
    The user interface has been designed to support efficient working with minimum time spent switching between options. The AP-50’s simple and intuitive design ensures that minimal training is required for the operator. The software can be operated via the touch screen or with mouse and keyboard, depending on the user’s preferences.
  • Multiple data presentation modes
    To better visualise possible vision field defects, the user can access multiple data presentation modes including: numeric values, pattern grade or grey scale absolute values in dB, as relative to hill of vision, age related changes, defect probability defect curve (Bebie graph) normalised values
  • Data import/ export
    The AP-50’s export/ import 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. The import function accepts files stored in .xml and .pdf formats.
  • Defect progress analysis
    The regression analysis function allows the user to track changes in field of vision over time. Multiple examination results of the same patient can be used for the analysis. Regression curves can be presented in 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 a particular area of vision field e.g. periphery or centre, or can cover the entire tested field of vision.
  • Quick access menu
    For increased efficiency, the quick access menu reduces the number of parameters required to be entered before the examination may start. The user can predefine test types, so that they only have to select or enter patient data. This function reduces the overall test time and introduces standardisation to test procedures.
  • Pattern calibration
    For patients with large defects in the visual field or fields significantly deviating from the standard, perimetry examinations can be time consuming. To improve the comfort for such patients and significantly reduce testing time; pattern calibration can be used. The results of earlier examinations of the patient’s eye can be used as a reference for the new test. This technique can significantly reduce test time.
  • Result compare function
    Up to four patient examination results can be used for comparison, allowing better visualisation of the defect progress over time.
  • Data safety
    The automatic backup function can be programmed to happen periodically, to be saved in a location defined by the user. This function assures the safety of your patient records.

Software functionality

Technical specifications

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