Pars plana lentectomy was performed in a total of 75 eyes of 63 patients. The main indications were congenital and infantile cataract, traumatic cataract, and complicated cataract associated with uveitis. The surgical technique, the difficulties encountered, and the intraoperative and postoperative complications are described. While there are hardly any problems associated with the operation and postoperative care in older patients, a number of difficulties occur in infants and small children. Of decisive importance here are, among other things, correct timing of the operation, a gentle surgical technique and disciplined optical rehabilitation, which requires close cooperation between the clinic and the parents. If these requirements are satisfied, the prognosis of congenital and infantile cataract can be considered favorable.