I've had chronic CSR for the past 16 years. It really sucks. It is mostly thought that corticosteroids are the main hazard, although there are case studies of guys on TRT getting it and having it resolve upon discontinuation of TRT. I discontinued TRT for 6 months after diagnosis, but that did not have any effect on my CSR, so my retinologist said it would be OK to continue with it. I did continue, but just at a minimum dose of 60mg/week. Just enough to get me to mid-range T levels. I avoid all other steroids religiously and have in my medical records that I am never to be administered or prescribed any type of steroid.