Figure 1: Categorization of weak zonule. Zonular weakness was categorized based on findings at capsulorhexis and difficulty in performing continuous curvilinear capsulorhexis (CCC). A: Group N (normal). No or slight lens movement was observed at the beginning of CCC. CCC could be performed without any difficulty. B: Group W (weak). Moderate lens movement was frequently accompanied by fold formation around the needle tip during CCC. CCC could be performed, although there was some difficulty. C: Group VW (very weak). Puncture was impossible due to severe lens movement under BSS. CCC could be performed with the aid of Healon 5®. D: Group EW (extremely weak). Severe zonular deficiency in addition to the Group VW criteria.