Why the Corneal Ring standard segment arch length measures 155 degrees?
The arch length reduction from 160 to 155 degrees for each segment is part of the improvement package of this new generation of intrastromal implants. This minor change does not significantly interfere with the ring efficiency, however, it represents a SUBSTANTIAL REDUCTION in the rate of extrusion complications, as the segment end is placed far from the incision site. For better clarification, in addition to the 155 degrees arch length Cornealring available today, Visiontech provides also both the 150 degrees Intacs segment and the 160 degrees Keraring/Ferrara ring segments.
