The operation can improve a blockage in the sperm transportation system. Vasectomy can be surgically changed in up to 85% of problems, but many men remain infertile even after the blockage is fixed. Repair of varicoceles is also likely to bring back fertility if the veins are large and if the repair is done before any long-term illness. The operation also can repair varicoceles, but it may not recover fertility. Male infertility is diagnosed based on symptoms. It is analyzed by a physical medical examination. Sometimes, doctors also ask for a patient’s past medical health. Post this, a few tests are done for diagnosing the ailment accurately.