capsular bag
The remaining natural lens capsule after cataract extraction, which serves as the location for IOL implantation.
Full Definition
The capsular bag refers to the transparent, elastic membrane that originally enclosed the natural crystalline lens and remains after cataract extraction. During cataract surgery, the anterior capsule is opened (capsulorrhexis) and the lens contents are removed, leaving behind this bag-like structure. The capsular bag provides the ideal location for intraocular lens implantation, offering stable positioning and biocompatibility. Proper capsular bag integrity is crucial for successful IOL placement and long-term stability.
Usage
Usage note: Always written as two words; distinguish from specific capsular structures like capsular tension ring.
In Context
- "The IOL was successfully implanted within the capsular bag with excellent centration." — Cataract surgery operative note
- "Capsular bag contraction was noted six months following lens implantation." — Postoperative follow-up