<prompt> To maximize feility potential, orchidopexy for cryptorchidism should be done before:15 years of age12 years of age18 years of age2 years of age  <response>: Testes are exquisitely sensitive to temperature; therefore there is progressive deterioration of testes that are not within the scrotum. Cryptorchid testes Whether they are in inguinal canal, in intra-abdominal position, or in ectopic position, will undergo progressive spermatogenic failure, although adequate amounts of androgens may be produced secreted. Timing of orchidopexy has been moved progressively backward, and now the recommendation is that orchidopexy should be accomplished before age 2 years, to maximize possibility of production of spermatozoa of normal quantity and quality. In cases of unilateral cryptorchidism ;matter of surgical exploration is less critical; however, to provide maximum potential for both testes, the earlier cryptorchidism is surgically corrected ;the better are chances for normal spermatogenesis. 