"Good eyesight benefits, good eyesight protects". The phoropter can help here. This instrument is used by opthalmists and opticians to determine the patient’s sharpness of vision. The phoropter is of significant benefit to the work of the opthalmist or optician.

The phoropter msut move smoothly, quietly, rapidly and with high positional accuracy in front of the patient’s eyes. It is also important that the guidance system blends in visually with the rest of the instrument. The guidance system should be maintenance-free.