Zonular dialysis
Disruption or separation of the zonular fibers that suspend the crystalline lens, compromising lens stability.
Full Definition
Zonular dialysis refers to the breakdown or separation of zonular fibers, the microscopic strands that suspend the natural lens within the eye. This condition can be congenital, traumatic, or age-related, and significantly complicates cataract surgery by reducing lens stability. Documentation must specify the extent of zonular loss, typically described in clock hours (e.g., 'zonular dialysis from 2 to 4 o'clock'). Surgical reports should detail any supportive devices used, such as capsular tension rings or segments, to maintain capsular bag integrity during IOL implantation.
Usage
Usage note: Document the extent of zonular dialysis using clock hour notation for precise anatomical reference.
In Context
- "Significant zonular dialysis from 6 to 10 o'clock required placement of a capsular tension ring for stability." — Operative note
- "The patient's history of trauma resulted in zonular dialysis that complicated phacoemulsification." — Preoperative assessment