| http://www.w3.org/ns/prov#value | - the optical region, adapted when the lens is fixated to contact the posterior capsule at support surfaces coinciding with the roof profile and to thereby provide a capsule-covered protected open zone overlying the rear face of the central optical region, the dimensions and spacing of the support members being such as to avoid blocking of the visual axis and sagging of the capsule into the open zon
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