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Soft
& rigid lenses can have very light tints to improve their
visibility when off the eye & to add the patient in handling
them.
Soft
& rigid lenses that alter the apparent eye color are available
in cosmetic enhancement tints for people who have lighter
eye & opaque tints for people who have darker eyes.
Such
lenses typically have a clear central area of about 4mm for
visual purposes & a clear annular peripheral area of about
1mm which overlays the sclera.
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