Frey AP-250 and AP-250BY Visual Field Analyzer


Visual field analyzer AP-250 and AP-250BY are fully functional static back LED projection automated perimeters with a full field measurement. AP-250 and AP-250BY use green color LED projection of stimulus in Goldman size III. Visual field analyzer AP-250BY additionally offers test Blue-on-yellow with a blue stimulus Goldman V size and yellow backlight in accordance with the requirements of the SWAP perimetry. The software supplied with the device offers a wide range of strategies, fields and test parameters. 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 formats for presenting and printing test results. Frey perimeter AP-250 as well as AP-250BY can be easily set up with any PC computer running the Windows operating system.


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Frey AP-250 and AP-250BY Visual Field Analyzer

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Automated Perimeter
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Advanced static perimetry capabilities

Static perimetry is the most frequently used technology for quality of visual field verification, detection of glaucoma and for monitoring glaucoma related changes in visual field. AP-250 and AP-250BY are supported by a rich library of test fields and strategies that meet and exceed user requirements and broad range of perimetry applications.

Bi-Driving test

Bi-Driving is test for binocular patient examination with vision field extended to 80˚ nasally and temporally. The test fulfils requirements for driver testing. During the test, both eyes of the patient are simultaneously monitored by the digital camera.

Blue-on-Yellow

Blue-on-Yellow static perimetry is a test used for early glaucoma detection. This feature is available on AP-250BY and performed according to SWAP recommended Goldman size V stimulus in blue color presented on yellow color background.

Reduced ambient light conditions

AP-250 and AP-250BY measurement bowl is very well designed and engineered housing a combination advanced digital bowl illumination controls which reduces requirements for test room illumination conditions. For improved patient comfort, ventilation is provided by whisper-quiet concealed fans.

Simple patient positioning

Electrically driven chinrest with movement across horizontal and vertical axis, allows for easy patient positioning. Movement of the chinrest can be controlled with push buttons located on the front of the perimeter housing or from PC with perimeter software. Anatomical head and chin support provide patient comfort during the examination.

External PC

Network communication between PC and AP-250 and AP-250BY perimeters only require one USB 2.0 port, creating an effective and seamless interface with any PC running Windows. All PC network connected devices such as printers or storage servers can be used for examination test result printing or data backup and storage.

Device type

Automated perimeter

Measurement bowl type

Hemispherical 300mm radius with difusive surface

Maximum temporal range (degrees)

80°

Stimulus

Green-on-white Blue-on-yellow (only AP-250BY)

Stimulus duration

0.1 – 9.9s

Stimulus size

AP-250BY – III & V AP-250 – III

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)

Yellow 100cd/m2 for Blue-on-Yellow (AP-250BY only)
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

User defined test fields
Bi-Driving,
Industial Medicine, monocular, binocular

Correction glass diameter

38mm

Chinrest

Electrically driven in horizontal and vertical axis

Computer

Touch screen support

Printer

External or network printer

Additional software features

Fovea threshold testing

Automatic pupil measurment
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: 420 mm

Weight

18kg

Power requirements

Voltage 110-230VAC Power 95W