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Background <p>To compare flange creation using high- vs. low-temperature cautery for three piece intraocular lenses (IOLs) with PMMA and PVDF haptics.</p> Methods <p>The ends of the haptics from ten three-piece IOLs with PMMA haptics (AR40, Johnson &amp; Johnson, USA) and ten three-piece IOLs with PVDF haptics (PU6AS, KOWA, Japan) were each heated for 1&#xa0;mm to form a flange—using low-temperature cautery (593&#xa0;°C) on the ipsilateral haptic and high-temperature cautery (1205&#xa0;°C) on the contralateral haptic. Flange size, shape, and formation time were analysed.</p> Results <p>There were no differences in flange shape and flange size between high- and low-temperature cautery for each haptic type (<i>p</i> &gt; 0.05). Average flange size of the AR40 IOL and the PU6AS IOL were 422 ± 22&#xa0;μm and 363 ± 14&#xa0;μm, respectively. Haptic diameter were 172 ± 5&#xa0;μm and 126 ± 3&#xa0;μm, respectively. The shape of the AR40 IOL flange was conic and the shape of the PU6AS IOL flange was mushroom-like, independent of cautery temperature. Flange formation time was 1.7 ± 0.6&#xa0;s with the high-temperature cautery and 3.7 ± 0.6&#xa0;s with the low-temperature cautery, regardless of the haptic material.</p> Conclusions <p>Flange size and shape in PMMA and PVDF haptics are independent of low- and high-temperature cautery. However, the extended flange formation time associated with low-temperature cautery may allow for greater control during flange creation.</p>

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Comparison of flange creation in three-piece intraocular lenses between high- and low-temperature cautery

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年10月22日

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  • Martin Kronschläger,
  • Stéphane Blouin,
  • Johannes Zeilinger,
  • Andreas Schlatter,
  • Manuel Ruiss,
  • Oliver Findl

摘要

Background

To compare flange creation using high- vs. low-temperature cautery for three piece intraocular lenses (IOLs) with PMMA and PVDF haptics.

Methods

The ends of the haptics from ten three-piece IOLs with PMMA haptics (AR40, Johnson & Johnson, USA) and ten three-piece IOLs with PVDF haptics (PU6AS, KOWA, Japan) were each heated for 1 mm to form a flange—using low-temperature cautery (593 °C) on the ipsilateral haptic and high-temperature cautery (1205 °C) on the contralateral haptic. Flange size, shape, and formation time were analysed.

Results

There were no differences in flange shape and flange size between high- and low-temperature cautery for each haptic type (p > 0.05). Average flange size of the AR40 IOL and the PU6AS IOL were 422 ± 22 μm and 363 ± 14 μm, respectively. Haptic diameter were 172 ± 5 μm and 126 ± 3 μm, respectively. The shape of the AR40 IOL flange was conic and the shape of the PU6AS IOL flange was mushroom-like, independent of cautery temperature. Flange formation time was 1.7 ± 0.6 s with the high-temperature cautery and 3.7 ± 0.6 s with the low-temperature cautery, regardless of the haptic material.

Conclusions

Flange size and shape in PMMA and PVDF haptics are independent of low- and high-temperature cautery. However, the extended flange formation time associated with low-temperature cautery may allow for greater control during flange creation.