User-proposed entry field(s) for customized data analysis/presentation

An apparatus comprising:

• a sub-wavefront focusing lens configured to focus a sub-wavefront, being an incident portion of a wavefront generated by a light source, to an image spot located on a focal plane;
• a sequential wavefront scanning device configured to sequentially project different portions of an incident wavefront on the sub-wavefront focusing lens;
• a variable aperture configured to control the size of the sub-wavefront;
• a position sensing device, located substantially at the focal plane of the sub-wavefront focusing lens, configured to indicate the location of the image spot on the focal plane;
• a controllable wavefront offsetting element positioned to intercept the portion of the wavefront before it is incident on the wavefront sensor;
• a user-input device;
• a non-transitory computer readable storage device holding one or more data values captured by a measurement device and a program;
• and
• a controller, coupled to the controllable wavefront offsetting element, the user input device and the storage device, configured to control the controllable wavefront offsetting element to offset selected wavefront aberration components of the wavefront in order to measure one or more remaining aberration components of the portion of wavefront, to execute the program to assign one or more remaining wavefront aberration components to one or more corresponding variables, to receive a user-selected algorithm that processes one or more of the variables to assess or alter the one or more variables to provide a resultant value and to output the resultant value.