A system for laser treatment of an eye of a patient, the system comprising: a laser energy source configured to generate a laser treatment beam; an interface configured to receive user selection of an energy value of an energy value scale, the selected energy value being representative of an amount of energy to be delivered to the patient by the laser treatment beam, wherein the selected energy value is on an operating curve for the laser treatment beam, and wherein the operating curve relates the selected energy value with a power and a duration of the laser treatment beam; and a controller configured to: obtain output parameters of the laser treatment beam; generate the operating curve for the laser treatment beam based at least in part on the obtained output parameters of the laser treatment beam, wherein the operating curve is generated at least in part on a first point of intersection between a first energy curve and a first energy value of the energy value scale, and a second point of intersection between a second energy curve and a second energy value of the energy value scale, wherein the first energy curve indicates combinations of duration and power of the laser treatment beam for generating a first detectable lesion on the eye of the patient, and the second energy curve indicates combinations of duration and power of the laser treatment beam for generating a second detectable lesion on the eye of the patient, wherein the first detectable lesion and the second detectable lesion have different types of clinical results; and adjust at least one of a power and a duration of the laser treatment beam in response to the selected energy value using the operating curve for the laser treatment beam. a laser energy source configured to generate a laser treatment beam; an interface configured to receive user selection of an energy value of an energy value scale, the selected energy value being representative of an amount of energy to be delivered to the patient by the laser treatment beam, wherein the selected energy value is on an operating curve for the laser treatment beam, and wherein the operating curve relates the selected energy value with a power and a duration of the laser treatment beam; and wherein the selected energy value is on an operating curve for the laser treatment beam, and wherein the operating curve relates the selected energy value with a power and a duration of the laser treatment beam; and a controller configured to: obtain output parameters of the laser treatment beam; generate the operating curve for the laser treatment beam based at least in part on the obtained output parameters of the laser treatment beam, obtain output parameters of the laser treatment beam; generate the operating curve for the laser treatment beam based at least in part on the obtained output parameters of the laser treatment beam, wherein the operating curve is generated at least in part on a first point of intersection between a first energy curve and a first energy value of the energy value scale, and a second point of intersection between a second energy curve and a second energy value of the energy value scale, wherein the first energy curve indicates combinations of duration and power of the laser treatment beam for generating a first detectable lesion on the eye of the patient, and the second energy curve indicates combinations of duration and power of the laser treatment beam for generating a second detectable lesion on the eye of the patient, wherein the first detectable lesion and the second detectable lesion have different types of clinical results; and adjust at least one of a power and a duration of the laser treatment beam in response to the selected energy value using the operating curve for the laser treatment beam. wherein the first energy curve indicates combinations of duration and power of the laser treatment beam for generating a first detectable lesion on the eye of the patient, and the second energy curve indicates combinations of duration and power of the laser treatment beam for generating a second detectable lesion on the eye of the patient, wherein the first detectable lesion and the second detectable lesion have different types of clinical results; and adjust at least one of a power and a duration of the laser treatment beam in response to the selected energy value using the operating curve for the laser treatment beam.