Dear Dr. James, Thank you for your timely reply to my question. I am somewhat relieved by your answer but just wondering what the likely chance of permanent vision loss could be if it turns out that my husband has pigmentary dispersion syndrome. He is a very active lawyer by day requiring him to read long hours at his laptop and a very avid golfer on the weekends. I sense that he fears loss of visual acuity and wants to know if the condition responds to treatment well. Thank you very much (again).