Can Lucha T8 be used by a person with a detached retina?

It can, by applying it on the solar plexus 2-3 times a day. For now, it is not recommended to hold the device directly on the head. In some situations, looking directly into the red light that emits the Schumann frequency for a short period of time could theoretically contribute to improving the function of the eye apparatus and balancing the overall energy in the body.