Evaluation of the Utility of Capsular Stabilization Devices in a Zonular Fiber Defect Model with the Slit Side View...

Area of Science:

• Ophthalmology
• Surgical Innovation
• Biomedical Engineering

Background:

• Zonular fiber defects pose challenges during cataract surgery, potentially leading to complications.
• Maintaining capsular stability is crucial for successful phacoemulsification and preventing intraoperative issues.

Purpose of the Study:

• To evaluate the efficacy of capsular stabilization devices in a simulated zonular fiber defect model.
• To assess the utility of the slit side view (SSV) system in observing capsular dynamics during phacoemulsification.

Main Methods:

• A porcine eye model with induced zonular fiber defects was utilized.
• Phacoemulsification was performed on three groups: control, capsule expander (CE), and capsular tension ring (CTR).
• Lens capsule movement and anterior chamber depth were monitored using the slit side view (SSV) system.

Main Results:

• The control group exhibited significant lens equator instability and capsule movement.
• Both capsule expanders and capsular tension rings demonstrated effective capsular stabilization.
• Capsular tension rings showed a notable ability to restore the lens equator to its original position.

Conclusions:

• Capsular stabilization devices are effective in managing zonular fiber defects during phacoemulsification.
• The slit side view (SSV) system is a valuable tool for evaluating the performance of these devices in defect models.