Cone Adaptation Test by Barrier Free Access (HK) Limited Price US$85.5 Supplier/s Barrier Free Access (HK) Limited Supplier Code 252900 (IAPB) Country of Origin USA Request a quote Product Description Cone Adaptation Test (252900) Product Features The test consists of 15: red, blue, and white plastic chips. Chip measures: 5 cm x 5 cm (2" x 2") The test situation is not a formal test of night vision, but gives useful information on visual adaptation to lighting changes. Share: