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Related Experiment Videos

[Suction cup ocular pressure versus Vörösmarthy oculopression. Biometry differences].

U Giers1, L E Pillunat, R Stodtmeister

  • 1Universitäts-Augenklinik, Ulm/Donau, Bundesrepublik Deutschland.

Fortschritte Der Ophthalmologie : Zeitschrift Der Deutschen Ophthalmologischen Gesellschaft
|January 1, 1990
PubMed
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Oculopression methods, Honan and suction-cup, showed temporary biometric changes. Cataract patients experienced more significant biometric alterations than younger subjects after oculopression.

Area of Science:

  • Ophthalmology
  • Biomedical Engineering

Background:

  • Oculopression is a technique used to reduce intraocular pressure.
  • Understanding the biometric effects of different oculopression methods is crucial for ophthalmic procedures.

Purpose of the Study:

  • To compare the biometric effects of Honan oculopression versus suction-cup oculopression.
  • To assess changes in anterior chamber depth and vitreous length following oculopression.
  • To evaluate age-related differences in biometric responses to oculopression.

Main Methods:

  • Ultrasound biometry (10 MHz A-scan probe) was used to measure ocular parameters.
  • Thirty-two eyes from 16 cataract patients (>50 years) and 16 healthy young subjects (<30 years) were studied.
  • Oculopression was applied using a Honan Oculopressor or a suction-cup oculodynamometer, with measurements taken pre-procedure and at 20-min intervals post-procedure.

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Main Results:

  • Honan oculopression led to initial deepening of the anterior chamber and shortening of the vitreous length.
  • Suction-cup oculopression did not produce significant changes in these biometric parameters.
  • No statistically significant differences were observed between the two methods at 10 minutes post-oculopression.
  • Cataract patients exhibited more pronounced biometric changes compared to younger subjects.

Conclusions:

  • Both Honan and suction-cup oculopression induce transient biometric changes, with Honan's method showing more immediate effects on anterior chamber depth and vitreous length.
  • Age appears to influence the magnitude of biometric response to oculopression, with older patients showing greater alterations.
  • Further research is warranted to fully elucidate the long-term implications of these biometric shifts.