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Phacoemulsification with aspirated or retained Viscoat

L E Probst1, O J Hakim, B D Nichols

  • 1Department of Ophthalmology, University Hospital, University of Western Ontario, London, Canada.

Journal of Cataract and Refractive Surgery
|March 1, 1994
PubMed
Summary
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Retaining Viscoat after cataract surgery showed similar endothelial cell loss but less pleomorphism compared to aspiration. Surgeons should monitor for potential intraocular pressure increases post-surgery.

Area of Science:

  • Ophthalmology
  • Biomaterials Science

Background:

  • Phacoemulsification with intraocular lens implantation is a common cataract surgery.
  • Viscoelastic devices like Viscoat are used to maintain anterior chamber space during surgery.
  • The optimal management of viscoelastic material post-surgery is debated.

Purpose of the Study:

  • To compare the effects of aspirating versus retaining Viscoat after cataract surgery.
  • To evaluate endothelial cell counts, morphology, and postoperative intraocular pressure (IOP).

Main Methods:

  • A prospective study involving 55 patients (60 eyes) undergoing uncomplicated phacoemulsification.
  • Eyes were randomized to either aspirate or retain Viscoat.
  • Endothelial cell analysis, morphology assessment, and IOP measurements were performed 24 hours postoperatively.

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Main Results:

  • Endothelial cell loss was comparable between retained (8.7%) and aspirated (8.8%) Viscoat groups.
  • Significantly less postoperative pleomorphism was observed in the retained Viscoat group.
  • A trend towards higher postoperative IOP was noted in the retained Viscoat group, possibly due to trabecular meshwork blockage.

Conclusions:

  • Retaining Viscoat does not significantly increase endothelial cell loss and may reduce pleomorphism after cataract surgery.
  • Surgeons should be aware of a potential, though not statistically significant, increase in postoperative IOP when Viscoat is retained.
  • The findings suggest Viscoat can be retained if surgeons are prepared to manage potential IOP elevation.