Piccolo® Short Corridor Lens Patented
Technology
Short Frames. Short of Compromises.
While fashion trends create a demand for short corridor progressive lenses, there will always continue to be
a need for stable and comfortable vision.
Designing a progressive lens is a mathematical procedure
that involves managing optical errors to create optimal
fields of vision. The best PAL designs are those that
manage all optical variables and excess cylinders to
create a lens with adequate, clear fields of vision
and are easy to wear.
Therefore, when designing a short corridor lens, optical
engineers must take into account all optical variables,
while delivering a lens with a short corridor.
To provide a short corridor, the lens designer may
choose to manage unwanted astigmatism across the lens
by either spreading it over a larger area in the lens
(figure A) or by increasing the density in limited areas
(figure B).

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