Operation for prostate problems?

In males, retrograde ejaculation occurs when the fluid to be ejaculated, which would normally exit via the urethra, is redirected towards the urinary bladder. Normally the sphincter of the bladder contracts and the sperm goes to the urethra towards the area of least pressure. In retrograde ejaculation this sphincter does not function properly. Causes may be in the autonomic nervous system or the operation of the prostate. Retrograde ejaculation is a common complication of trans-urethral resection of the prostate, a procedure in which diseased tissue is removed, slice by slice, through a resectoscope passed along the urethra.