Vision Screener test by Barrier Free Access (HK) Limited Price US$153 Supplier/s Barrier Free Access (HK) Limited Supplier Code 253500 (IAPB) Country of Origin USA Request a quote Product Description Hiding Heidi Low Contrast Face Test (Double Sided) (253500) Product Features Four cards printed on both sides in the following contrast levels: black, 25%, 10%, 5%, 2.5% and 1.25%. Card measures: 23 cm x 23 cm To assess Visual Acuity at reduced contrast Share: