What makes a lens unique? How much measuring data does it take to perfectly align the lens with your individual needs? And why will you enjoy more relaxed vision if you choose customised lenses?
Try this exercise: Cover half of your face with a mirror whilst standing in front of another mirror. Now your own face will look strange to you – unnatural, even. Not a single person on earth has two symmetric halves of a face. Even this minute detail plays a huge role in the micrometre precise production of lenses because the highly sensitive human eye does recognise even the tiniest deviations. The long term results could be visual problems or fatigue. It is therefore hardly surprising that your visual impression will be more comfortable and more relaxed if your lenses and frames are aligned accurately with your individual symmetry and the shape of your face.
It is even more important to obtain such precise data if your lens is highly complex or powerful. The highest discipline is the production of progressive lenses where the transitions of the long distance vision zone and the reading zone are cut into the lens invisibly. Customised production is of particular importance for these lenses so that the vision result attained is not hampered in the transition zone between remote and close-up vision.
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