Literal question
[Question 13- 17 were asked of all persons.]</p>
<p><span class="em">17. a) Is this person deaf or does he/she have serious difficulty hearing?</span><div class="i1">[] Yes<br />[] No</div><span class="em">17. b) Is this person blind or does he/she have serious difficulty seeing even when wearing glasses?</span><div class="i1">[] Yes<br />[] No</div>