Frey – Perimeter – AP-300

AP-300 visual sensitivity testing is a modern and innovative automated perimetry that meets 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.
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 personalized testing for the patient and the clinician.

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ap300 perimeter frey - us ophthalmic

Patient focused – improved patient comfort

Visual field testing is a joint enterprise between clinician and patient. Visual field testing, otherwise known as perimetry, is a team effort. A patient who is well supported, and where every effort is made to maximize comfort, improves reliability in visual field testing. This increased reliability in visual field testing translates to greater accuracy and efficacy in diagnosis and management for the clinician. In turn, this improves patient outcomes and satisfaction throughout the patient journey, which may be decades long. Frey has delivered improved patient comfort with a chinrest design focused on comfort and stability. The patient’s head is supported throughout the examination. The AP-300 has improved ventilation for the patient, which reduces stress and improves patient comfort.

ap300 perimeter frey - us ophthalmic

Accurate Results

The stimulator bowl provides a high density of concentric points. The enhanced stimulus control combines with the automated eye tracking, providing repeatable accurate examination of the patient’s visual field loss.

ap300 perimeter frey - us ophthalmic

Rapid Testing Times

Efficient testing is reliably delivered with screening and fast threshold strategies and enhanced fixation methods. Patients with advanced visual field loss are supported with the use of pattern calibration and neurological test methods.

Modes of Operation

Static Test Mode

The AP-300 emits motionless stimuli of variable luminance in order to determine a patient’s threshold. There is a dim light in a specific location, and if the patient cannot see it, the intensity of the stimulus increases. The patient’s responses are then compared to those from an individual in a control group who is of an equivalent age.

The exam is defined by Test and Strategy, all stimulus colors and sizes are available for the static tests, and the results are more reliable and of a higher quality.

Kinetic Test Mode

A dedicated test strategy
The test involves a stimulus with a fixed size, intensity, and speed that is moving from the periphery to the centre of the measurement bowl. The test is repeated with different stimulus sizes and intensities in order to define unique isotopes.

ap300 perimeter frey - us ophthalmic

Static Test Parameters

Two new parameters can be configured:

  • * Stimulus Size
  • * Stimulus Color

The backlight illumination color is white for all of the tests, except for the blue on yellow test. For the blue on yellow test, the size of the stimulus is Goldman V.

It is important to select the appropriate test strategy and we test almost twice as many points than our competitors for the same field of vision. In addition, the AP-300 provides a fast scan and smart threshold that further improves testing accuracy.

ap300 perimeter frey - us ophthalmic

Reviewing Results – Static Perimetry

The “Results” screen is divided into functional group boxes. The detailed descriptions of the group boxes are provided in the following section.

Cross Section View

This is a graphic map that divides the visual field into two parts that are represented by the colors red and blue. The study facilitates the selection of the angle of cut and it allows sensitivity to be measured in decibels in all directions of the visual field up to 60˚.

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ap300 perimeter frey - us ophthalmic

Kinetic Test Parameters

Kinetic testing is selected by the Kinetic strategy.

  • * Any parameters that are not applicable for the kinetic test are disabled automatically.
  • * All of the parameters for the test are defined on the test screen level.

Kinetic Test – Results

The Kinetic test results are presented in the form of isotopes, with each one in different colour.
Each isotope links points of the patient’s response to the stimulus entering the sensitive area.

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Intuitive Software

The design of the AP-300 is both patient and clinician focused. Frey perimeter software is intuitive and user friendly, facilitating operation by a range of qualified staff in an efficient and effective manner. The interactive menus provide comprehensive information and efficient operation, reducing the time spent preparing, reviewing and printing patient exams. This platform supports clinical excellence with increased patient flow and efficacy.

  • * Information about the version
  • * Add New Patient
  • * Edit Patient Data
  • * Start New Exam
  • * Result Review
  • * Regression Analysis
  • * Test Editor
  • * Export/Import Function
ap300 perimeter frey - us ophthalmic ap300 perimeter frey - us ophthalmic

ap300 perimeter frey - us ophthalmic

Patient Image Database

The perimeter application can be used as an image database, for example, for fundus images.
DICOM fundus files can also be imported automatically.

ap300 perimeter frey - us ophthalmic

Targeted Perimetry

Perimetry examination results can be presented over a fundus image. Furthermore, the orientation of the stimulus position is calculated using fovea and blind spot position, but each of these have to be marked by the operator.

ap300 perimeter frey - us ophthalmic

Fundus Overlay Function

This is a unique approach that allows selective retinal areas to be tested. The stimulus locations are set based on the patient’s fundus image, while the area and density of the test points are set manually.

Fundus Overlay View

The Automated Perimeter software allows users to overlay the exam results with the fundus images that are taken by the fundus camera. In order to get the overlay, after selecting the option “Fundus Overlay”, load the fundus image from the file or select the image from the ones that have already been saved.

The next step is the selection of two orientation points, which are used for the calculation of positions for the exam results. These points are a fovea and a blind spot. Press the button marked “Fovea,” and click the fovea position on the fundus image. Next, press the button marked “blind spot,” and click the blind spot position on the fundus image. The exam results are now displayed on the fundus image. The overlay can then be saved by using option “Save overlay”.

ap300 perimeter frey - us ophthalmic

Dual Main Screen Option

This resource allows two main screen options, it is simplified for use in the test room by the operator, it allows custom test selection, it is a standardized test procedure, and it has a complete interface for reception areas or doctors’ rooms.

ap300 perimeter frey - us ophthalmic

Simple Menu Customization

The simple menu is fully customizable and all of the test parameters can be configured according to the client’s request. The clinical workflow is also improved as it allows for the standardization of the test procedure. Furthermore, the software is very easy to use by the operator with reduced requirements.

ap300 perimeter frey - us ophthalmic

Fixation Control

AP-300 Automated Perimeter has two mechanisms of fixation control.

Heijl-Krakau Method

This 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.

Method of Eye Position

The AP-300 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.

ap300 perimeter frey - us ophthalmic


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.

Automatic Pupil Detection

If the automatic method of fixation monitoring is used, the software will detect the current position of the eye. There is no need to keep the eye in the center of the image during the test, although it is still important that the patient looks into the fixation point all the times. The eye positioning control feature can be obtained from the screen, from the joystick, or through the software. In addition, the chinrest can be moved up – down and right – left.

ap300 perimeter frey - us ophthalmic

Advanced Techniques

Previously, glaucoma was not diagnosed until the disease was in its advanced stage. Currently, we have new technologies that offer early detection of this condition.

The Blue Perimeter Yellow (B-Y)

Blue perimeter yellow, also known as automated short wavelength perimetry (SWAP), demonstrates an enhanced ability to detect early visual field loss in comparison to standard white-on-white (W-W) perimetry.

Flicker (Critical Fusion Blink)

Glaucoma affects sensitivity to blinking lights.
FFC analyzes a patient’s ability to see alterations of light to dark stimuli in different locations of the visual field.
It also measures early neuronal suffering, thereby detecting glaucoma in its early stages.

ap300 perimeter frey - us ophthalmic

Single Printout

AP-300 utilizes the simplest form of print, which contains one big graphical map representing the exam results. This will be printed in the same form that is chosen on the “Results” screen in “Single mode”. When “Single mode” is not selected, the dB level map in grey scale will be printed by default. The advantage of the “Single printout” option is the very high readability of the print.

ap300 perimeter frey - us ophthalmic

Multiple Printout Options

Users have the option to use 1 out of 7 available printout standards. HFA type printouts are predefined and static perimetry standard printouts are also available (FREY, Medmont, etc.). The printouts are in grey scale and in color.

Multiple Result Review Options

The AP-300 is equipped with a powerful set of data presentation modes.

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Pattern Calibration

The AP-300 was designed to reduce test duration for patients with significant loss of vision field.
Earlier examination can be used as the starting point of a new test.
“Pattern” examination defines the starting point for a new examination. In addition, blind stimulus locations from “pattern” examination are tested with the highest stimulus intensity.
All test parameters are identical to the reference exam and the parameters are selected during the start of a new test in the “Test parameters window”.

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ap300 perimeter frey - us ophthalmic

Pattern Multiple Driver Test Options

5 different driver test programs
Visual monitoring of both patient’s eyes


  • * All AP-300 light sources are LEDs.
  • * The system is maintenance free.
  • * It demonstrates high light source stability over the time.
  • * Real white on white perimeter.
  • * White stimulus 4000K color temperature.
  • * White background illumination 4000K temperature.
  • * HFA devices use CCFL lamps for background illumination and halogen bulb for stimulus.

Self Diagnostic

Before and after each test, the AP-300 performs a self-diagnostic cycles in which:

  • * Stimulus intensity is verified by an internal sensor.
  • * Any error related to mechanical misalignment and light source intensity drift is minimized.
  • * Dust or dirt collected in the optical path is detected.
  • * Background illumination is stabilized in order to allow the test to start.
  • * Ambient light influence is minimized.


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.

Regression Analysis – Static Perimetry

The AP software is equipped with a set of options that allow a user to observe changes in a patient’s vision in many different ways. The first possibility is the simple comparison of results, which was described in the previous section. A second possibility that is much more advanced, is regression analysis which helps the user observe the regression or progression of a patient’s vision over time.
At least two patients’ exam results are needed to perform regression analysis. The exams should be conducted using the same strategy, but on different days.
The patient’s name, age, and the eye that was tested will be listed on the left top part of the screen. A combo box located on the middle top portion of the screen lets the user choose one of five parameters that will be used to calculate and display the regression graph. The following parameters can be selected:

  • * Decibel level
  • * Hill of Vision decibel level
  • * Age Normal Deviation decibel level
  • * Pattern defect (PD)
  • * Average defect (AD)

The combo box is available when ‘Single mode’ is selected (on the right bottom of the screen). ‘Combo mode’ displays all five modes of the regression graphs together.

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ap300 perimeter frey - us ophthalmic

Test Editing

This function allows a user to define a custom test field. It is especially convenient for cases where only a part of the patient’s visual field should be examined, for example, the area where visual field loss was observed during earlier examinations. Using a custom test field in this manner can decrease both the patient’s discomfort and the examination time.
The affected eye (left or right) and the test field name that will be used as a pattern should be selected before test editing begins. The following test fields are available by default:

  • * Central 22˚
  • * Central 30˚
  • * Driving
  • * Full
  • * Glaucoma
  • * Macula
  • * Peripheral
  • * Wide

The combo box is available when “Single mode” is selected (on the right bottom of the screen). ‘Combo mode’ displays all five modes of the regression graphs together.

ap300 perimeter frey - us ophthalmic

Hill of Vision Probability Map

A “Hill of vision probability map” shows the probability of Hill of Vision defects for every single point of a field. The probabilities are calculated from the differences between the theoretical and calculated hills of vision. The lower the probability, the bigger the defect in the field of vision.

ap300 perimeter frey - us ophthalmic

Complete Analysis Modes

The AP-300 reliability and functionality is reinforced by complete analysis modes. These analysis modes are backed up by world population statistics.
The shaded maps have enhanced 3D function.

Age Normal Map

An Age Normal map displays the differences between the age normal values and the values obtained from the test. Therefore, the Age Normal map reflects the difference between the theoretical dB level map and the measured one.
Accordingly, an Age Normal map can be drawn in the following formats: numerical, grey scale, color scale, pattern scale, and 3D graph.

Mulitple Test Capabilities

Frey automated perimetry technology delivers complete flexibility for the clinician and patient. This provides the ability to offer patients testing for glaucoma, full field, flicker, binocular single vision and driving. This flexible platform offers visual field testing solutions spanning the range of clinical challenges from glaucoma to neurology and beyond.

Standard Tests – Static Perimetry

Standard tests are available in the AP software by default and each one is described in the tables and pictures below.

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ap300 perimeter frey - us ophthalmic


The AP-300 reliably delivers excellence in visual field measurement and analysis.
This critical information can be seamlessly integrated with computer networks, and multiple perimeters can share one database, which facilitates larger clinical practices and patient flow. The automated backup function provides reassurance in relation to data security for both patients and clinicians throughout the patient journey. Frey prides itself on providing the highest standard of service access and technical support, anytime and anywhere.

  • * AP-300 software is designed to work in a PC network environment.
  • * It can be installed on multiple PCs without additional an license fee.
  • * All PCs can share one database.
  • * It can use a centralized server for database storage.
  • * It has an automatic backup function for data safety.

HFA Data Import

  • * Some of HFA machines are equipped with an export function.
  • * The export file types are .xml and .pdf
  • * This type of data can be imported to AP-300 and stored in the database for future reference.
  • * However, absolute values that are measured with HFA devices cannot be imported.
  • * Furthermore, the data is for reference purposes only and cannot be used for analysis and/or calculations.

ap300 perimeter frey - us ophthalmic

DICOM Export

Each examination result can be stored in DICOM format directly from the data review screen.
In addition, automatic DICOM storage into any network location can be configured in the Service settings.

ap300 perimeter frey - us ophthalmic

MS Excell Export

Results from the data review screen can be stored in .csv format after each examination result is obtained. This improves the ease at which data can be imported and exported to other data analysis programs, thereby making it attractive for scientific users.


Perimetry Principals

AP-300 and Humphrey Comparison

Extended Guide

Additional information

Device Type

Automated Perimeter

Measurement Bowl Type

Hemispherical 300mm radius with difusive surface

Cylinder AxisMaximum Temporal Range (degrees)




Stimulus Duration

0.1 – 9.9s

Stimulus Size


Stimulus Intensity

0.03asb to 10000asb in 15 3dB or 45 1dB steps

Visual Field Testing Distance

300 mm

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: Screeing
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


Kinetic Perimetry

up to 8 izopter
individual stimulus parameters (color, size, movement speed) for each isopter


Electrically driven in horizontal and vertical axis


Touch screen support
Build-in PC


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


Height: 25in
Width: 22in
Depth: 17in


39.6 lbs

Power Requirements

Voltage 110-230VAC
Power 95W



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