Frey AP-300 Advanced Visual Field Analyzer

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Frey AP-300 Advanced Visual Field Analyzer

Perimeter AP-300 is a modern and innovative Visual Field Analyzer that meets global standards for excellence around visual sensitivity testing, diagnosis and management of eye disease. Perimeter AP-300 as a visual field analyser platform of advanced diagnostics uses Kinetic and Static Perimetry, including white/white perimetry, blue/yellow (SWAP – Short wavelength automated perimetry) and Flicker (critical flicker fusion perimetry) for early glaucoma detection plus real Goldmann Kinetic Perimetry. The device offers a visual field wide range of strategies, fields and test parameters. Built-in camera provides automatic visual field analyzing control of patient fixation. Built-in data analysis include regression analysis of the visual field on the basis of historical examinations and standardized ways of presenting and printing test results. Intuitive perimeter software allows easy operation and is designed to be operated using the touch screen. Visual field analyser AP-300 design includes built-in high quality PC computer.

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Description

Complete test and data analysis sytem

Visual Field Analyzer 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, color, 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

Static perimetry Blue-On-Yellow, 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

Visual Field Analyzer 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. By default, the proposed stimulus is white III.

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

The unique technology targeted perimetry allows the user to load previous fundus images and select area requiring investigation, and the perimetry examination will be focussed 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

Visual Field Analyzer AP-300 can be used in both small offices and large clinics. With built-in networking capabilities, installation of the device is very easy with system expansion economical. Visual Field Analyzer AP-300 can easily communicate with devices connected directly or network printers and servers. Perimeter software can be installed on any number of computers, allowing users to organize efficient and effectively patient workflow across any clinical practice.

Test result presentation

The resulting sensitivity of the field of view can be presented in many forms, including numerical gray scale, scale, color, scale, dot or a three-dimensional map. Presentations can represent absolute values in decibels, hill view, deviations from the standard age and curve defect (Bebie). Visual Field Analyzer AP-300 software allows the user to print the results in the form of a standard map 7 in 1 (7 result presentation on one side), or other formats are available for user preference and editing.

Strategies & 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). Accuracy and clinical relevance of the results of the examination can be significantly affected by patient fatigue. Visual Field Analyzer AP-300 software is complemented by advanced algorithms to allow to shortened examination times while maintaining accuracy and clinical relevance.

Accuracy of the examination is controlled by parameters such as exposures false positive, false negative exposure, verify the position of the optic disk method Heijl-Krakau method or automatic control of fixation (digital tracking of the eye). Additionally, adaptive adjustment of the speed of stimulus presentation, depending on the patient’s response can be optioned and implemented by the user which can significantly improve the clinical examination.

Additional Information

Technical Specifications

Device type	Automated perimeter
Measurement bowl type	Hemispherical 300mm radius with difusive surface
Maximum temporal range (degrees)	80°
Stimulus	White-on-white
	Green-on-white
	Red-on-white
	Blue-on-yellow
Stimulus duration	0.1 – 9.9s
Stimulus size	I-V
Stimulus intensity	0.03asb to 10000asb in 15 3dB or 45 1dB steps
Visual field testing distance	30cm
Background illumination	White 10asb (3.2cd/m2) for red and green stimulus tests
	White 31.5asb (10cd/m2) for white stimulus tests
	Yellow 100cd/m2 for Blue-on-Yellow tests
	Automatic background illumination control
Fixation control	Heijl-Krakau blind spot monitor
	Eye tracking (video camera)
	Eye previev (video camera)
Test models	Supra threshold age corrected: Screening
	Threshold: Full Threshold, Fast Threshold, Smart Threshold
	Others: 2-Zone, 3-Zone, Quantify Defect, Constant, Binocular, Bi-Driving, Targeted Perimetry, Neurological
Test field library	With concentric test point positions: Macula, Central 22°, Central 30°, Full, Driving, Wide, Glaucoma, Peripheral
	With square-grid position: Macula, 10-2, 24-2, 30-2
	User defined test fields
	Bi-Driving, Industial Medicine, monocular, binocular
Correction glass diameter	38mm
Kinetic perimetry	up to 8 izopter
Kinetic perimetry	individual stimulus parameters (color, size, movement speed) for each isopter
Chinrest	Electrically driven in horizontal and vertical axis
Computer	Touch screen support
Computer	Build-in PC
Printer	External or network printer
Additional software features	Automatic pupil diameter measurement
	Fovea threshold testing
	User management module
	Touch screen operation
	DICOM export
	Network connectivity
	Programming interface for EMR systems
	Data import from HFA devices
	Auto backup
Dimensions	Height: 637mm
	Width: 566mm
	Depth: 420mm
Weight	18kg
Power requirements	Voltage 110-230VAC
Power requirements	Power 95W