Devices, systems, and methods measure, diagnose, and/or treat one or both
eyes of a patient. Adaptive optics systems (such as those having a
deformable mirror) may be configured to an aspherical or multi-spherical
presbyopia-mitigating prescriptive shape to allow objective and/or
subjective measurements of a candidate prescription. A plurality of
viewing distances allow subjective and/or objective evaluations of
performance using a light spot or a test viewing image. Measurements of
aberrations at selected viewing conditions (including distances and/or
brightness) with correlating pupil sizes may also be provided.