11,749 people were registered with a visual impairment; of these just over half were registered as severely sight impaired and just under half as sight impaired. [
Roedd 11,749 o bobl wedi’u cofrestru â nam ar eu golwg; o’r rhain, roedd ychydig dros hanner wedi’u cofrestru â nam difrifol ar eu golwg ac ychydig llai na hanner â nam ar eu golwg. [