Manufacturer: FREY
Product code: VFAP50

The AP-50 is a lightweight desktop auto perimeter, ideally suited for glaucoma diagnosis and busy mobile clinicians.

The AP-50 uses LED back projection of stimuli in white colour, and offers a wide range of strategies, test fields and 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 includes regression analysis and standardised presentation and printing of examination results.

The AP-50 Auto Perimeter is compatible with any PC computer running Windows.

Small device size with extensive features

The elliptically shaped measurement bowl significantly reduces the size of the AP-50, yet the diagnostic value of the device is comparable to a full field perimeter. 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.

Compact and lightweight design

The AP-50 measures 548 x 382 x 450 mm and weighs only 9kg, making it an ideal desktop clinical tool which can be easily transported, set up and installed.

Less need for ambient light conditions

The elliptically shaped measurement bowl requires lower test room illumination conditions. Electronically controlled background illumination ensures stable measurement conditions.

Standard test fields and conditions

Standard test fields including central 30, central 24, and macula are available and all tests allow for easy data comparison with other perimeter systems. Dedicated glaucoma tests are included.

Binocular testing

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.

Software functionality

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.