Review on 🌈 STLY Kaleidoscope Glasses: Mesmerizing Rainbow Diffraction Experience by Jeremy Flint

FIT Physically unwearable them on the face. The nose bridge was too small for my narrow adult nose, so the glasses sit forward like they're about to fall off. Because the lenses are made of glass, you can only hold them on your face by tilting your head back or lying down. EFFECT Turns out the effect is quite different than a kaleidoscope. Because the diffractive lenses are so close to your eye, the eye finds it incredibly difficult to focus on anything and constantly wants to focus, which causes a headache very quickly. I have perfect 20/20 vision so I'm not sure it will be any different for someone who wears prescription glasses on a daily basis. The effect would be better if they made a lens with lots of tiny diffractions instead of a few big angles. Summary - Overall these glasses do not live up to what is advertised.