| http://www.w3.org/ns/prov#value | - The connecting zone may further be defined by inputs including the length or ???depth??? of the sigmoidal curve (L), the radial distance from the center of the lens to the base curve junction with the sigmoidal curve (J1), the radial distance from the center of the lens to the junction of the sigmoidal curve with the peripheral zone, and the width of the sigmoidal curve (W) computed by subtracting
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