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Related Experiment Videos

Intraocular pressure during phacoemulsification.

Christopher Khng1, Mark Packer, I Howard Fine

  • 1From the Oregon Eye Institute, Eugene, Oregon.

Journal of Cataract and Refractive Surgery
|March 28, 2006
PubMed
Summary
This summary is machine-generated.

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Bimanual microincision phacoemulsification (microphaco) and standard coaxial phacoemulsification both elevate intraocular pressure (IOP). Microphaco showed lower IOP in some stages, suggesting comparable safety for this cataract surgery technique.

Area of Science:

  • Ophthalmology
  • Surgical Technology
  • Biomedical Engineering

Background:

  • Cataract surgery techniques aim to minimize intraocular pressure (IOP) fluctuations.
  • Microincision cataract surgery offers potential benefits but requires IOP assessment.

Purpose of the Study:

  • To evaluate intraocular pressure (IOP) changes during standard coaxial and bimanual microincision phacoemulsification.
  • To compare the safety of bimanual microphaco versus coaxial phacoemulsification regarding IOP.

Main Methods:

  • Phacoemulsification performed on cadaver eyes: 3 bimanual microphaco, 1 standard coaxial.
  • Vitreous cavity pressure transducer recorded IOP at 100 Hz.
  • IOP measured across 8 surgical stages, including variations in bimanual microphaco incision size and Cruise Control use.

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Main Results:

  • Both techniques caused IOP spikes exceeding 60 mm Hg.
  • Highest IOP occurred during hydrodissection, OVD injection, and IOL insertion.
  • Bimanual microphaco demonstrated lower IOP in 4 of 8 stages compared to coaxial phacoemulsification.

Conclusions:

  • No consistent significant difference in IOP was observed between bimanual microphaco and standard coaxial phacoemulsification.
  • Bimanual microincision phacoemulsification is considered as safe as standard small incision phacoemulsification concerning IOP management.