A capillary refill measurement apparatus (1), comprising a support element (14) configured to receive the weight of a user through their foot, a light source (22) for illuminating a region of the foot that exerts weight onto the support element (14), a light detector (24) arranged to receive light from the illuminated region (36) of the foot and generate an output based on the received light, and a processor (26) configured to determine a capillary refill rate from the output of the light detector (24) when the user adjusts the amount of weight received by the support element (14).
