TY - JOUR AU - Keay L AU - Tiedemann A AU - Bajaj R AU - Ramulu P AU - Dillon L AU - Jakobsen K AU - Rogers K BT - Ophthalmic and Physiological Optics DA - 107384416237 DO - 10.1111/opo.12577 LA - eng PY - 2018 T2 - Ophthalmic and Physiological Optics TI - Validating the accuracy of an activity monitor in a visually impaired older population ER -