May a deaf person read the Megila on Purim for the congregation? Assuming he knows how to read properly, does the fact that he cannot hear disqualify him from conducting the public Megila reading?
From the Gemara’s discussion in Masechet Berachot (15), it appears that a person who cannot hear should preferably not read the Megila for others, but if such a person did read the Megila, the listeners have fulfilled their obligation. This is, indeed, the view of most Halachic authorities, including the Magen Abraham, the Lebush, the Peri Hadash, and many others.
The Shulhan Aruch, however, rules differently, claiming that a deaf person cannot fulfill the congregation’s requirement of Megila reading, even after the fact. If a person who cannot hear read the Megila on Purim, according to the Shulhan Aruch, the listeners have not fulfilled their obligation. In his Bet Yosef, Maran discusses the aforementioned passage in the Gemara and seeks to demonstrate that it does not, in fact, imply that a deaf person’s reading is valid.
Therefore, a deaf person should not read the Megila for others on Purim, and if he does read the Megila, the listeners do not fulfill their obligation through his reading.
If a person can hear with the help of a hearing aid, may he read the Megila for the congregation?
Hacham Ovadia Yosef writes that the Halacha in such a case depends on the extent of the individual’s impairment. If he cannot hear at all without the device, then he has the status of a deaf person and cannot read the Megila for others. If, however, he can hear without the hearing aid, and he wears the device only for amplification, to enhance the sound, then he is not considered deaf and is qualified to read the Megila for the congregation.
Elsewhere, Hacham Ovadia writes that a person who wears a hearing aid should sit near the reader during the Megila reading, at a distance from where he could hear the reading even without the hearing aid. If he sits at a distance from where he could hear the reading only through the device, then he does not fulfill the Misva. He must be close enough to the reader that he is not dependent upon the hearing aid for hearing the Megila reading.
Summary: A deaf person should not read the Megila on Purim for others, and if he does, the listeners have not fulfilled their obligation. If a person is able to hear but wears a hearing aid for amplification, he may read the Megila for others, but if he cannot hear at all without the hearing aid, then he should not read the Megila. A person who wears a hearing aid should sit close enough to the reader during the Megila reading that he would be able to hear the reading even without the hearing aid.