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Necessity of the Honan intraocular pressure reducer in cataract surgery using topical anesthesia

E H Black1, K L Cohen, N K Tripoli

  • 1Department of Ophthalmology, University of North Carolina at Chapel Hill, USA.

Journal of Cataract and Refractive Surgery
|February 10, 1999
PubMed

Insights

The Honan intraocular pressure reducer (HIPR) temporarily lowered eye pressure before cataract surgery. However, this effect was short-lived, offering no sustained benefit when using topical anesthesia.

Area of Science:

  • Ophthalmology
  • Surgical Innovation
  • Patient Outcomes

Background:

  • Cataract surgery requires careful management of intraocular pressure (IOP).
  • The Honan intraocular pressure reducer (HIPR) is a device designed to lower IOP.
  • Assessing the efficacy of HIPR in conjunction with topical anesthesia for clear corneal cataract surgery is crucial.

Purpose of the Study:

  • To evaluate the effectiveness of the Honan intraocular pressure reducer (HIPR) in reducing intraocular pressure (IOP) during clear corneal cataract surgery performed with topical anesthesia.

Main Methods:

  • A randomized controlled trial was conducted with 51 patients undergoing cataract surgery.
  • 26 patients were assigned to the HIPR group, wearing the device for 10 minutes pre-surgery.
  • Intraocular pressure (IOP) was measured at three time points: pre-HIPR (T1), post-HIPR (T2), and pre-surgery (T3).

Main Results:

  • The HIPR group showed a significant IOP reduction between T1 and T2 (P = 2.8 x 10(-7)).
  • Mean IOP in the HIPR group returned to baseline levels by T3, showing a significant increase from T2 (P = 3.5 x 10(-9)).
  • No significant difference in IOP was observed between the HIPR and control groups at T1 and T3.

Conclusions:

  • The Honan intraocular pressure reducer (HIPR) provides a transient reduction in intraocular pressure (IOP) when used with topical anesthesia.
  • The IOP-lowering effect of the HIPR dissipates before the commencement of cataract surgery.
  • The study concludes that the HIPR does not offer a sustained IOP benefit for cataract surgery under topical anesthesia.
Abstract

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