The University of Waterloo’s School of
Optometry found that brain stimulation can assist in recovery of vision in
people with macular degeneration. A single 20-minute session of non-invasive
visual cortex stimulation resulted in improved effects in macular degeneration
patients.
Peripheral vision is relied on heavily by
people who suffer from macular degeneration, as they often lose central vision.
When attempting to crowd or segregate an object from others in close proximity,
further difficulties arise.
Transcranial direct current stimulation (tDCS)
interventions reduce mechanisms in the visual cortex that contribute to
crowding. This can improve vision in patients with central vision loss,
especially when combined with perceptual learning techniques.
Ben Thompson, professor at the School of
Optometry and Vision Science, said, “Perceptual learning can reduce letter
crowding for patients with macular degeneration. However, perceptual learning
typically requires intensive training, which may be a barrier for patients.
Additionally, the learning does not always transfer to non-trained stimuli,
that’s why this discovery is so promising, it addresses all of these concerns.
Results of this study lay the foundation for future work investigating whether
a-tDCS may be useful as a visual rehabilitation tool for individuals with
central vision loss who are reliant on peripheral vision.”
Macular Degeneration is the leading cause of
vision loss (more than cataracts and glaucoma combined), affecting more than 10
million Americans. It is considered an incurable eye disease caused by the
deterioration of the central portion of the retina. The retina is the inside
back layer of the eye that records the images we see and sends them to the
brain via an optic nerve. The macula, the retina’s central portion, is
responsible for focusing central vision in the eye. It also controls our
ability to read, drive a car, recognize faces, colors, and see objects in fine
detail.
There are three stages of macular
degeneration, with vision loss as the last. Despite there being no cure for
macular degeneration, activities such as dieting, exercising, avoiding smoking,
and protecting your eyes from ultraviolet light are all ways to decrease the overall
risk.
For more information
regarding the correlation between macular degeneration and brain stimulation,
read the original article. Contact the professionals at Rohr Eye & Laser Center to experience
personalized ocular care.
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Laser Center offers the most advanced technology available to provide
personalized and extraordinary care to our patients. Whether your goal is to
maintain or improve your natural vision, we are here to help you. Call us at 877-579-0202 or visit https://www.michiganlasik.com/ to schedule an appointment today.
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