dont understand your response. maybe i didnt explain well . ok my previous glasses had vinyl or sylicon ? nose area that you can take off of the glasses in which we tried both materials and both gave me that burning sensation. ok now my 2 recent pairs the part that sits on my nose is part of the glasses itself there is nothing to take on and off to try different materials and these 2 pairs are giving me that burning sensation on nose. eyes are fine my eyes dont bother me at all. just the skin on my nose where glasses sit. and they are loose not tight.
It is possible that you have a sensitivity to the plastic material used for the particular frames you have chosen. If necessary I would followup with a dermatologist that could evaluate this sensitivity for you. As well as returning to the optician that fit you with the frames and perhaps try a different frames. Sometimes it is trial and error in finding a frame material that does not cause this effect ,but a dermatologist could probably better evaluate this situation for you. Does this make sense. Thank you