Experimental analysis of residual ophthalmic viscosurgical devices after microcoaxial phacoemulsific

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Experimental analysis of residual ophthalmic
viscosurgical devices after micro-coaxial
phacoemulsification with OzilTM handpiece
Mami Yoshino Shin Katsushika Hospital,Tokyo,JAPAN
Hiroko Bissen-Miyajima, Nae Kitamura, Shinichi
Ohki Tokyo Dental College Suidobashi
Hospital,Tokyo Japan
All authors have no financial Interests
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PURPOSE

• Protecting corneal endothelium during
  phacoemulsification(PEA) is expected for several
  ophthalmic viscosurgical devices (OVDs).
• Using pig eyes, the residual thickness of OVD
  remained under the cornea was measured after the
  complete of PEA.

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MATERIALS

• 40 extracted pig eyes
• 10 eyes for each OVD.

• OVD was stained with fluorescein.

SH sodium hyaluroate CS sodium condroitin
sulfate
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METHODS
Corneal incision (2.3mm)
Injection of OVD (0.4ml) into anterior chamber
Micro-coaxial PEA with Ozil handpiece
Settings
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Measurement of residual OVD
EAS-1000
Corneal endothelium
Residuial OVD
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RESULTS
Thickness of remained OVD
(mm)
(meanSD)
0.920.1
0.890.08
0.740.16
Thickness
0
Provisc
Healon 5
DisCoViscTM
Viscoat
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Statistical Analysis
One-way ANOVA and the Tukey HSD test
NSNot significant (Pgt0.05) significant (
Plt0.05)
The residual thickness of each OVD was similar to
that with PEA using a conventional handpiece.
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REFERENCES

• The stained OVD is visible and allows the
  quantitative analysis.

• Bissen-Miyajima In vitro behavior of ophthalmic
  viscosurgical devices during phacoemulsification
  (JCRS 2006)
• Oshika Retention and removal of a new viscous
  dispersive ophthalmic viscosurgical device during
  cataract surgery in animal eyes (BJO 2006)

• Using anterior analyzer, the remained OVD can be
  observed under the corneal endothelium.

• Petroll Quantitative assessment of ophthalmic
  viscosurgical device retention using in vivo
  confocal microscopy (JCRS 2006)

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CONCLUSION

• Regarding to the protection of corneal
  endothelium during phacoemulsificaiton, Healon 5
  and DisCoVisc showed preferable results.