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Aqueous Flare of a Hydrophobic Acrylic Single-piece Open-loop IOL With Modified Material Surface Properties

NCT01767012 · Status: COMPLETED · Phase: PHASE4 · Type: INTERVENTIONAL · Enrollment: 40

Last updated 2013-01-11

No results posted yet for this study

Summary

Modern phacoemulsification techniques have made cataract surgery safe and efficient over the past several decades. Although the phacoemulsification procedure has improved greatly, cataract surgery still involves trauma. One of the surgical traumas during cataract surgery is the direct trauma of the anterior uvea, resulting in a later chronic immune reaction of the uvea to the implanted intraocular lens (IOL). 1 The breakdown of the blood-aqueous barrier (a measure of the uveal reaction) clinically presents as flare in the anterior chamber. 2 Petternel et al. 3 explained that the protein content of the aqueous humor may mainly arise from the iris root and iris vessels in the anterior chamber. The peak of this flare and cell intensity in the anterior chamber was shown to be reached during the first two days after cataract surgery 4 and flare levels were back to the preoperative values about one year after cataract surgery. 5, 6 Influencing factors are surgical technique 7, perioperative treatment 8, IOL biomaterial and design 9 and host reaction to the IOL.

In this study the otherwise same IOL concerning material and design, but one with a new surface modification will be compared to assess the influence on aqueous flare and cell intensity in the anterior chamber. The Polylens (Polytech, Rossdorf, Germany) is a hydrophobic acrylic single-piece open-loop IOL and is available with the standard surface and a novel modified surface.

To assess the efficacy of the newly modified surface of the Polylens IOL compared to the same IOL without a modified surface concerning flare and cell intensity in the anterior chamber as well as cellular components on the IOL surface and lens epithelial out-growth from the rhexis after cataract surgery in eyes of patients with diabetes mellitus and pseudoexfoliation syndrome, which typically have a higher incidence of post-operative intra-ocular inflammation.

Conditions

  • Cataract
  • Diabetes
  • Pseudoexfoliation Syndrome

Interventions

DEVICE

Polylens EC-HY10-PAL (coated)

hydrophobic acrylic IOL with modified surface properties (Heparin-coating)

DEVICE

Polylens EC-Y10-PAL (uncoated)

Sponsors & Collaborators

  • Vienna Institute for Research in Ocular Surgery

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
21 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2010-08-31
Primary Completion
2012-08-31
Completion
2012-11-30

Countries

  • Austria

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01767012 on ClinicalTrials.gov