The MapCat SF is a new device that measures the level of macular pigment at the back of the eye (also called Macular Pigment Optical Density or MPOD).
Macular pigment (a yellow-colored protective layer found in the central part of the retina) is responsible for protecting the macula against damage caused by waste products that build up in the eye, and against the damaging effects of short wavelength light (‘high energy visible’ or blue light). The MapCat essentially provides a measure of the thickness of this macular pigment tissue by determining the amount of blue light radiation that is being absorbed. The macular pigment strongly absorbs light in the blue light range of 455 to 460 nm.
Stephenson Eye Associates is proud to introduce the Mapcat SF into our diagnostic portfolio. Invented by Professor Richard Bone at Florida International University, the Mapcat SF is the first device to use a ‘single fixation’ measurement technique (making it much easier for the patient to perform than other tests), and the ability to measure the density of the patient’s lens as well as the density of the macular pigment.
In addition to being a modifiable risk factor for Age-related Macular Degeneration, and a biomarker for several other diseases, the macular pigment also plays an important role in vision performance. Because of the way it is focused as it passes through the eye, shorter wavelength light (blue light) can decrease contrast, and increase halos and glare (for instance when driving at night). Macular pigment filters blue light, which can reduce these negative effects.
Increasing macular pigment levels has been proven to reduce the risk of disease progression, and also to increase vision performance (contrast sensitivity, glare disability, photostress recovery). We are delighted to be able to offer this additional service to our patients here at Stephenson Eye Associates.