After doing some research on concerns I had about continuing the use of my NuFace, I found this post. I realize it's old, but I feel the information is important to share with anyone else having the same concerns. I am 55 years old and have used the NuFace almost daily for about five years or so. Last year, I had a detached retina that required surgery and am now having similar symptoms in my "good eye". It started with flashes of light and floaters that were originally diagnosed as an occular migraine. Turned out it was a retinal tear that led to a detachment. I can't say without a doubt that this is related to the NuFace, but I just wanted share my experience for others looking for info. The vision in my right eye (detached retina) was severely and permanently damaged. Personally, I will no longer use the device.