A thread was started yesterday on this topic, which could be of great importance and interest to pilots. Although it is generally self-limiting and unlikely to be of great harm in the longer term, it would certainly be very worrying to most people in a profession to whom eyes and vision are so very important.
The thread mysteriously disappeared, but just in case anyone else was concerned or interested a very useful description of the condition, and its treatment and prognosis, can be found here :
http://www.vrmny.com/pe/csc.html
Hope this is helpful.