Frey Perímetro AP-50

Focus on the patient – ​​enhanced comfort.
Visual field testing is a collaborative effort between clinician and patient. Perimetry is a team effort. A well-assisted patient, for whom comfort is maximized, improves the reliability of the visual field test. This greater reliability translates into more accurate and effective diagnosis and clinical management. In turn, this improves outcomes and satisfaction throughout the patient’s journey, which can extend for decades. Frey has provided greater patient comfort with a chin rest designed for comfort and stability. The patient’s head is supported throughout the examination. The AP-50 features improved ventilation for the patient, which reduces stress and increases comfort.

Precise Results:
The stimulator dome offers a high density of concentric points. Enhanced stimulus control combined with automated eye tracking provides repeatable and accurate examinations of the patient’s visual field loss.

Fast Test Times:
Efficient test completion is ensured by rapid screening and thresholding strategies and enhanced fixation methods. Patients with advanced visual field loss benefit from standard calibration support.

Operating Modes:

Static Test Mode:
The AP-50 emits stationary stimuli of varying luminance to determine the patient’s threshold. A dim light is present in a specific location, and if the patient does not see it, the stimulus intensity increases. The patient’s responses are then compared to those of an age-matched control group individual. The test is defined by Test and Strategy, white-on-white stimulus colors, and Goldman III size. These are available for static tests, and the results are more reliable and of higher quality.

Binocular Test:
The AP-50 meets specific visual field testing requirements for drivers and occupational medicine. The measurement range covers up to 160 degrees temporally, and both eyes can be tested simultaneously.

Review of results – static perimeter
The “Results” screen is divided into functional group boxes. Detailed descriptions of the boxes are provided in the following section (Single, Combo, Cross Section View and Multi).

Advanced Techniques
: In the past, glaucoma was only diagnosed in advanced stages. Currently, new technologies allow for the early detection of this condition.

Flicker (Fusion Critical of Blink):
Glaucoma affects sensitivity to flashing lights.
FFC analyzes the patient’s ability to perceive light/dark alternations in different locations of the visual field. It also measures early neuronal damage, detecting glaucoma in its initial stages.

Reliability:
Reliable automated fixation control, with integrated camera and automatic eye tracking, supports both patient and clinician, increasing repeatability and reliability in data capture.

Regression Analysis – Static Perimetry:
The AP software is equipped with options that allow you to observe changes in the patient’s vision in several ways. The first possibility is the simple comparison of results, described in the previous section. The second, more advanced, is regression analysis, which helps the user observe regression or progression of vision over time.
At least two patient examination results are required to perform regression analysis. The examinations must be conducted using the same strategy, but on different days.
Patient name, age, and eye tested are listed in the upper left of the screen. A selection box in the upper center allows you to choose one of five parameters to calculate and display the regression graph. The following can be selected:

• Level in decibels
• Hill of Vision – decibel level
• Pattern defect (PD)
• Average defect (AD)

The selection box becomes available when “Single mode” is selected (in the lower right corner of the screen). “Combo mode” displays all five regression graph modes together.

Test Editing
Function: This function allows you to define a custom test field. It is especially useful when only part of the patient’s visual field needs to be examined, for example, the area where field loss was observed in previous examinations. Using a custom field can reduce patient discomfort and examination time.
Before starting the editing process, you must select the affected eye (right or left) and the name of the test field that will serve as the default. Fields available by default:

• Central 22˚
• Central 30˚
• Full
• Glaucoma
• Stain

The selection box becomes available when “Single mode” is selected (in the lower right corner of the screen). “Combo mode” displays all five regression graph modes together.

Comprehensive Analysis Modes:
The reliability and functionality of the AP-50 are enhanced by comprehensive analysis modes based on worldwide population statistics.
The shaded maps feature enhanced 3D functionality.

Age-Normal Map:
The “Age Normal” map displays the differences between normal values ​​for age and the values ​​obtained in the test. Thus, it reflects the difference between the theoretical dB level map and the measured value.
The “Age Normal” map can be displayed in the following formats: numeric, grayscale, color scale, pattern scale, and 3D graph.

Networking:
The AP-50 consistently delivers excellence in visual field measurement and analysis. This critical information can be integrated into the computer network; multiple perimeters can share a single database, facilitating large clinics and patient flow. The automatic backup function ensures data security for patients and clinicians throughout the entire journey. Frey prides itself on offering access to the highest quality technical support and service, anytime, anywhere.

• The AP-50 software was designed to operate in a PC network environment.
• It can be installed on multiple PCs without an additional license fee.
• All PCs can share a single database.
• You can use a centralized server for database storage.
• It has an automatic backup function for data security.