Diagnostic Testing: Macular Perimetry (MAIA)
The macula is a region at the back of the eye that is responsible for detail, colour, and central vision. The Macular Integrity Assessment (MAIA) is a non-invasive macular microperimetry test used to evaluate the function of the macula.
The assessment involves looking at a circle in the centre of a camera lens. The machine shines light stimuli of varying intensities onto different regions of the macula. These appear to the patient as spots that appear within, or outside the circle in the camera lens. Once the stimuli reach intensities where the macula can perceive them (and in-turn, the patient can see them), the patient responds by pressing a remote button in their hand.
How long does it take?
The entire assessment requires 6 minutes per eye. The machine processes the data collected and compares it to predefined normal values, producing numerical values to denote the stability of the macula as well as the accuracy of the test performed.
Does the eye need to be dilated?
Due to the central location and small diameter of the region being tested, it is not necessary for the patient's eyes to be dilated for this test to be performed. This test is a new tool that can be very helpful in diagnosis of and tracking functional change in macular disease.
What will I see during the test?
Below is an image of what the patient will see duing the test.