Inclusion Criteria:  Patients aged 40 years and older who have signed their consent to participate in the study Patient with preserved cognitive functions Patient with BPH characterised by an IPSS score ≥ 12, a Qmax ≤ 15 ml/s and an ultrasound-assessed prostate volume between 40 and 150 cc Patient for whom an indication for prostatic resection by HoLEP has been made, A patient who is sexually active and willing to maintain sexual activity after surgery Patient affiliated to a social security system or beneficiary of such a system  Exclusion Criteria:  History of prostate surgery or prostate radiotherapy Urethral stenosis Cancer or a history of cancer Patient with a life expectancy of less than 2 years Patient refusing partial surgery History of vasectomy, erectile dysfunction or ejaculation Mental deficiency or any other reason that may hinder the understanding or the strict application of the protocol Patient under court protection, guardianship or curatorship Patient already included in another therapeutic study protocol or having participated in another trial in the previous three months