Each of the following is a feature of the federal government's definition of deaf-blindness EXCEPT
◦ problems with vision and hearing that cause extreme difficulty in attaining independence.
◦ hearing impairment of 30 dB or greater in the better ear.
◦ hearing impairment so severe that most speech cannot be heard, even with amplification.
◦ visual acuity of 20/200 or less in the better eye, with correction.