Implantation of an accommodating intraocular lens in an eye may require the accurate measurement of the size, circumference, or diameter of the capsular bag of the eye. After the natural crystalline lens has been surgically removed, a flexible ring may be temporarily or permanently inserted into the...http://www.google.fr/patents/US20080269642?utm_source=gb-gplus-shareBrevet US20080269642 - ANGLE INDICATOR FOR CAPSULAR BAG SIZE MEASUREMENT