| http://www.w3.org/ns/prov#value | - Lens movement is critical in the ultimate success of RGP multifocal lenses because it allows different optical zones to be presented at different times, and conversely, the absence of lens movement is a fundamentally limiting factor for soft multifocal lenses.Alternating RGP multifocal designs are available that can be fit lid-attached and rest in a superior position on the eye.
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