Categorization of events and censoring into intervals was defined by visit date if the visit occurred, otherwise using the target date of the visit.
* Number of eyes with follow up data at the start of the interval, and no vitrectomy prior to the start of the interval.
** Number of eyes with vitrectomy during the subsequent 4-week period.
† Not to scale.
No follow-up contact was performed between 16 and 52 weeks.