Capsular fibrosis
Scarring and contraction of the lens capsule following cataract surgery, potentially affecting IOL position and vision.
Full Definition
Capsular fibrosis refers to the formation of scar tissue within the lens capsular bag following cataract surgery, leading to capsular contraction and potential complications. This process occurs as lens epithelial cells undergo fibrous metaplasia and produce collagen, causing the capsule to shrink and become opaque. Capsular fibrosis can result in IOL decentration, capsular phimosis, or complete capsular closure around the IOL optic. Risk factors include incomplete removal of lens epithelial cells, certain IOL materials, and inflammatory conditions. Prevention strategies include thorough cortical cleanup and consideration of capsular tension rings in high-risk cases. Treatment may require YAG laser capsulotomy or surgical intervention.
Usage
Usage note: Often confused with posterior capsule opacification, which specifically affects the posterior capsule opacity rather than capsular contraction.
In Context
- "Progressive capsular fibrosis led to significant IOL decentration six months postoperatively." — Complication report
- "The patient's history of uveitis increased the risk of severe capsular fibrosis following cataract extraction." — Preoperative assessment