Technology

TrueField Analyzer

The TrueField® Analyzer (TFA) heralds a new era in visual field testing. It combines objectivity with “non-contact” ease of use, making it easy for technicians and patients, and gives clinicians objectivity in assessing their patient’s condition. Assessing both eyes concurrently the TFA test is fast (just 4 minutes total measurement time for both eyes) and exploits the consensual light reflex to further improve accuracy by considering bilateral asymmetries. Most importantly the TFA makes objective perimetry a clinical reality.

TFA - objective perimetry made fast and easy.

Pupil Perimetry

The TFA brings together advanced multi-focal stimulus and analysis methods with real time computer vision pupil monitoring to realize the dream of objective pupil perimetry. Initially developed over 15 years ago and subsequently demonstrated in multiple laboratories, pupil perimetry is based on measuring involuntary pupil diameter changes in response to retinal visual stimulation. By combining advanced sparse stimuli, regressive multi-focal methods and automated real-time computer vision pupil monitoring, the TFA moves pupil perimetry from the laboratory into clinical practice.

Visual Fields and Pupil Dynamics

The TFA compares a subject’s performance against a normative database and generates bilateral visual field test results in a format familiar to the physician. Initial training for both clinicians and technicians is minimal with prior experience of standard perimeters being directly relevant. In addition to creating standard reports that are easy for the clinician to interpret, the TFA report includes details of the pupil dynamics for the patient. These test results indicate the relative performance of the direct and consensual responses for the patient, and can indicate a range of neurological issues that warrant further investigation.