has a visual impairment which cannot be improved so as to give the person visual function substantially equivalent to that of a person who has no such impairment, and who is, as a result, unable to read printed works to substantially the same degree as a person without such an impairment;
atá faoi mhallachar amhairc nach féidir a fheabhsú ionas go mbeidh feidhm amhairc ag an duine atá coibhéiseach go substaintiúil le duine nach bhfuil mallachar den sórt sin air, agus mar thoradh air sin, nach bhfuil ábalta saothair chlóite a léamh go dtí an leibhéal céanna go substaintiúil le duine nach bhfuil mallachar den chineál sin air;