Method for comparing first and second optical lenses (V1, V2) by means of an automatic refractor head controlled by a control module, the method comprising the following steps according to which the control module: - displays on a selection screen a proposal for a first optical lens and a proposal for a second optical lens; - receives a selection of the proposal for the first optical lens; - arranges the first optical lens in a slot of the automatic refractor head on reception of the selection of the proposal for the first optical lens; - receives a selection of the proposal for the second optical lens; - arranges the second optical lens in the slot of the automatic refractor head on reception of the selection of the proposal for the second optical lens; - displays (103, 105) on the selection screen a plurality of validation symbols (S1, S2, S3) each indicating a possible result of the comparison; the method being such that: - when the control module receives the selection of the proposal for the first optical lens for the first time, the proposal for the second optical lens is selectable on the selection screen and no validation symbol (S1, S2, S3) is selectable on the selection screen; - when the control module receives the selection of the proposal for the second optical lens, the proposal for the first optical lens is selectable on the selection screen and first and second validation symbols (S1, S2) are selectable on the selection screen, the first symbol indicating that the first and second optical lenses (V1, V2) are the same and the second symbol indicating that the second optical lens is better than the first optical lens; - when the control module receives the selection of the proposal for the first optical lens for the second time or more, the proposal for the second optical lens is selectable on the selection screen and the first symbol and a third symbol are selectable on the selection screen, the third symbol indicating that the first optical lens is better than the second optical lens. - displays on a selection screen a proposal for a first optical lens and a proposal for a second optical lens; - receives a selection of the proposal for the first optical lens; - arranges the first optical lens in a slot of the automatic refractor head on reception of the selection of the proposal for the first optical lens; - receives a selection of the proposal for the second optical lens; - arranges the second optical lens in the slot of the automatic refractor head on reception of the selection of the proposal for the second optical lens; - displays (103, 105) on the selection screen a plurality of validation symbols (S1, S2, S3) each indicating a possible result of the comparison; - when the control module receives the selection of the proposal for the first optical lens for the first time, the proposal for the second optical lens is selectable on the selection screen and no validation symbol (S1, S2, S3) is selectable on the selection screen; - when the control module receives the selection of the proposal for the second optical lens, the proposal for the first optical lens is selectable on the selection screen and first and second validation symbols (S1, S2) are selectable on the selection screen, the first symbol indicating that the first and second optical lenses (V1, V2) are the same and the second symbol indicating that the second optical lens is better than the first optical lens; - when the control module receives the selection of the proposal for the first optical lens for the second time or more, the proposal for the second optical lens is selectable on the selection screen and the first symbol and a third symbol are selectable on the selection screen, the third symbol indicating that the first optical lens is better than the second optical lens.