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Clinical Trial Summary

The primary objective is to compare the effect of torsional phacoemulsification and longitudinal phacoemulsification on central and peripheral corneal thickness/volume after cataract surgery in patients with Fuchs' endothelial dystrophy.


Clinical Trial Description

Fuchs' endothelial dystrophy is a progressive, bilateral disease of the corneal endothelium, which eventually leads to corneal decompensation. In the early stage, some patients develop visually significant cataract. During cataract surgery ultrasound (US) power is used to emulsify the lens, which leads to endothelial cell loss and tissue damage. The reduction of US power has become the primary surgical goal in cataract surgery, which is especially important in patients with Fuchs' endothelial dystrophy to limit endothelial cell loss.

In 2006, Alcon Surgical introduced a torsional mode in its phacoemulsification system (Infiniti Vision System). It includes a handpiece that produces rotary oscillations of the phacoemulsification tip and is suggested to reduce the amount of US power required to remove the cataractous nucleus, because it does not produce repulsion and breaks up the cataract by shearing and not by the conventional jackhammer effect. This reduction in US power, could lead to less endothelial cell damage than the conventional (longitudinal) mode, which is reported recently for patients with hard cataract. It is important to investigate patients with Fuchs' endothelial dystrophy, because patients with a compromised endothelial cell layer will benefit the most from less endothelial cell damage. Consequently, this lower level of endothelial damage may postpone the date of keratoplasty. ;


Study Design

Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator, Outcomes Assessor), Primary Purpose: Treatment


Related Conditions & MeSH terms


NCT number NCT00781027
Study type Interventional
Source Maastricht University Medical Center
Contact
Status Completed
Phase Phase 4
Start date December 2008

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