The present invention relates to a method for determining a probe model for treating an eye pathology, from among a plurality of different probe models, each probe including a cone-shaped ring including a proximal end (11) intended to be in contact with one eye (4) of a patient and a distal end (12) intended to receive means for generating ultrasonic waves (2), the method comprising a step for receiving at least one measurement of a biometric parameter of the eye, and a step for determining the optimum probe model according to each biometric parameter.