• Partition protocol data and functional code.

• Find a simple way to test on real device data (this may be related to partition of the code).
• Define classes and values in a consistent way.

Every tree has a root corresponding to a class. The classes and context of each are supposed to be defined dynamically in artefact.

• tonoref2_refractometer→osin/odxt→sph/cyl/axis
• tonoref2_keratometer→osin/odxt→r1/r2/axis/ps
• tonoref2_tonometer→osin/odxt→mmhg

• visutron900plus→odxt/osin→sph_far/sph_near/cyl/axis

• Only median/AVG values when there exist more than one measurement.
• Handles refraktometri, keratometri and tonometri classes.
• Reintroduce checksum check

• Use sph_f in cycloplegisk refraction.
• Currently only support for sphere, cyl and axis in cycloplegic refraction.
• Handles refraktometri class.

• Handles refraktometri class.