zonules
Pronunciation: ZOHN-yools
Microscopic fibers that suspend the natural lens within the eye. Critical anatomical structures in cataract and lens-related surgeries.
Full Definition
The zonular fibers, also called suspensory ligaments of the lens, are delicate fibrous structures that extend from the ciliary body to the lens capsule, maintaining lens position and enabling accommodation. In cataract surgery, zonular integrity is essential for safe lens removal and IOL placement. Zonular weakness or dialysis can complicate surgery and may require specialized techniques or devices such as capsular tension rings. Assessment of zonular status is a critical component of pre-operative evaluation and surgical planning.
Usage
Usage note: Always used in plural form; 'zonular' is the correct adjectival form.
In Context
- "Intraoperative assessment revealed intact zonules with no evidence of pseudoexfoliation." — Surgical note
- "Zonular dialysis in the inferior quadrant required capsular tension ring placement." — Operative complication report