Sloan Letter Near Vision Card by Barrier Free Access (HK) Limited Price US$51 Supplier/s Barrier Free Access (HK) Limited Supplier Code 729000 (IAPB) Country of Origin USA Request a quote Product Description Sloan Letter Near Vision Card (729000) Product Features Testing Distance = 40 cm/ 16 inches Card measures: 25.4 cm x 20.32 cm With attached a 40cm measuring cord Standardized adult Sloan Letter in ETDRS format. For Near Visual Acuity Assessment Share: