A tablet containing at least amphotericin B deoxycholate, a substance with lubricating properties, a substance with disaggregating properties and a substance with aggregating properties, the tablet being usable in a device for preserving harvested corneas, in combination with a bottle (2) equipped with an openable and reclosable cap (7), where the bottle contains a sterile preserving liquid (3) having a pH of between 7.2 and 7.6 and wherein the tablet can be completely dissolved； in accordance with the method claimed, a harvested cornea being preservable in the preserving liquid in which the tablet has been dissolved, for up to at least 15 days at a temperature of between 2°C and 10°C.
