LEA Numbers, Low Vision by Barrier Free Access (HK) Limited Price US$136 Supplier/s Barrier Free Access (HK) Limited Supplier Code 527300 (IAPB) Country of Origin USA Request a quote Product Description LEA NUMBERS® Low Vision Book Top Binding Set (527300) Product Features Testing Distance = 3 m/ 1.5 m/ 40cm Included butterfly occlude glasses for children and metal frame occlude glasses. For Distance and Near Visual Acuity Assessment Share: