The new frontier in microperimetry
Offering combined scanning laser ophthalmoscopy, accurate real-time eye tracking and automated perimetry, the MAIA microperimeter is the best tool for detecting and monitoring retinal functional changes.
Please tell me more about MAIA
MAIA provides concurrent analysis of structural and functional aspects of the retina. Combining Scanning Laser Ophthalmology (SLO) fundus imaging, retinal sensitivity mapping and fixation analysis in one exam, MAIA microperimetry is a powerful tool to detect, describe and follow up pathologies affecting the macula, where visual acuity and conventional visual fields are inadequate.
Fixation parameters are fundamental in describing retinal function. These prognostic factors are as important as visual acuity and retinal sensitivity when diagnosing patients with macula disease.
The MAIA eliminates errors caused by fixation losses and allows the user to select multiple fixation targets. It also offers Preferred Retinal Locus (PRL) training for visual rehabilitation.
Eliminate errors caused by fixation losses
Compared to standard automated perimetry, the great advantage of microperimetry is that retinal sensitivity is measured while simultaneously imaging the retina, in real time.
Retinal images, created by SLO technology, are processed by an eye tracker to calculate and compensate fixation losses during visual field measurement.
MAIA is able to project multiple fixation targets at selectable locations to help patients with a central scotoma visualise the target during the sensitivity test. This new feature enhances the identification of the Preferred Retinal Locus (PRL) and decreases the examination time in patients with highly unstable fixation.
PRL training - visual rehabilitation
Patients with eccentric vision attempt to fixate on objects with a retinal area defined as the Preferred Retinal Locus (PRL). During the progression of pathology the PRL may evolve to a retinal area that lacks optimal characteristics for eccentric viewing, resulting in unstable fixation.
MAIA PRL training is a visual rehabilitation technique to help develop a new retinal locus of fixation, which is more functionally suitable for fixation tasks.
Characterise a variety of macula pathologies
MAIA is used as a diagnostic device to aid in the detection and management of diseases affecting the macula, including, but not limited to, macular degeneration. Thanks to its combined structure-function analysis, microperimetry represents an essential tool for diagnostic decisions and monitoring a variety of retinal diseases.
Age-related Macular Degeneration (AMD)
Reduced retinal sensitivity in localised macular areas can be correlated with the appearance of early stage AMD. Where the Preferred Retinal Locus (PRL) has shifted over an area of low sensitivity, unstable fixation and visual discomfort can occur.
Peri-foveal Preferred Retinal Locus (PRL) and partially preserved macula sensitivity may indicate a positive prognosis following treatment. Multiple PRLs may be relocated into a single region using the MAIA PRL training program.
A range of tests
MAIA performs different types of microperimetry tests to monitor functional progression. Each exam provides a measure of retinal sensitivity, stability and position of the Preferred Retinal Locus (PRL).
There are many supra and full-threshold tests and strategies which can be employed to measure differing levels of sensitivity and a range of pathologies.
Fast screening tests
The fast screening test is a supra-threshold test, used to screen patients with no known disease. It measures two levels of sensitivity (27 dB and 25 dB). Values are then colour-coded in comparison with normative intervals. The typical duration of the test (37 stimuli) is two minutes per eye.
The scotoma finder is a supra-threshold test, used to examine highly pathologic patients. It measures one level of sensitivity (0 dB). The typical duration of the test (37 stimuli) is about two minutes per eye.
Four levels fixed
This supra-threshold test is used to examine pathologic patients. It measures four levels of sensitivity (0 dB, 5 dB, 15 dB, 25 dB). The typical duration of the test (37 stimuli) is about three minutes per eye.
Full threshold 4-2
This full threshold test is used to examine retinal sensitivity in detail. The average threshold (dB) is colour-coded in comparison with normative intervals. The typical duration for the test (37 stimuli) is less than six minutes per eye.
Easy interaction between operator & patient
Highly automated and easy-to-use, the MAIA has been designed to offer great ergonomic advantages. It allows easy interaction between the operator, patient and device using automatic recognition of the eye, auto-focus and non-mydriatic operation.
Thanks to its Scanning Laser Ophthalmoscope (SLO) MAIA operates with a minimum pupil diameter of 2.5 mm, thus not requiring the use of dilating drops.
The non-mydriatic operation ensures the test can be performed quickly and efficiently, allowing faster patient throughput and ensuring a comfortable test for the patient.
The ergonomic and fully-motorised chin rest allows for improved cleaning and sterilisation practises, thanks to the silicone material of the patient rest cushions and a detachable front rest. The patient push-button is designed for improved ergonomics and is easily stored on the headrest when not in use via a magnetic support.
Integrated touch-screen PC
The system is quickly and easily navigated entirely using the 10.4” touch-screen with 1024 x 768 resolution. The integrated MAIA PC offers excellent storage capabilities, dual USB interfaces and ethernet interfaces for full connectivity.