34. By the sacrament of marriage, Christians signify and share in the mystery of the unity and fruitful love which exists between Christ and his Church. They help each other to attain holiness in their married life and in the rearing and education of their children (Rite of Marriage, n. 1).
35. All persons not prohibited by law can contract marriage (Canon 1058).
36. The local ordinary should make the necessary provisions to ensure the inclusion of persons with disabilities in marriage preparation programs. Through this preparation all couples may become predisposed toward holiness and to the duties of their new state. In developing diocesan policies, the local ordinary should consult with men and women of proven experience and skill in understanding the emotional, physical, spiritual, and psychological needs of persons with disabilities (Canons 1063, n. 2 and 1064). The inclusion of persons with disabilities in sponsoring couple programs is an especially effective way of supporting both the needs and the gifts of couples preparing for marriage.
37. For matrimonial consent to be valid, it is necessary that the contracting parties possess a sufficient use of reason; that they be free of any grave lack of discretion affecting their judgment about the rights and duties to which they are committing themselves; and that they be capable of assuming the essential obligations of the married state (Canon 1095). It is also necessary that the parties understand that marriage is a permanent union and is ordered to the good of the spouses, and the procreation and education of children (Canon 1096). Pastors and other clergy are to decide cases on an individual basis and in light of pastoral judgment based upon consultation with diocesan personnel involved with disability issues, and canonical, medical, and other experts. Medical and canonical opinions should be sought in determining the presence of any impediments to marriage. It should be noted, however, that paraplegia in itself does not always imply impotence, nor the permanence of such a condition, and it is not in itself an impediment. In case of doubt with regard to impotence, marriage may not be impeded (Canon 1084, sect. 2).
38. Catholics who are deaf are to be offered the opportunity to express their matrimonial consent in sign language, if sign language is their primary means of communication (Canon 1104, sect. 2). Marriage may also be contracted through a sign language interpreter whose trustworthiness has been certified by the pastor (Canon 1106).
39. Pastoral care for married persons extends throughout the married couples' lives. By their care and example, the entire ecclesial community bears witness to the fact that the matrimonial state may be maintained in a Christian spirit and make progress toward perfection. Special care is to be taken to include parishioners with disabilities in parish programs aimed at assisting and nourishing married couples in leading holier and fuller lives within their families (Canon 1063, n.4).
SOURCE: Guidelines for the Celebration of the Sacraments with Persons with Disabilities (USCCB)