ArticleInternational ophthalmology2026
Comparison of 45° Kelman and 45° ıntrepid balanced phaco tips in torsional phacoemulsification for hard cataracts: ıntraoperative efficiency and corneal endothelial outcomes.
Article in International ophthalmology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeTo compare the effects of the 45° Kelman phaco tip and the 45° Intrepid Balanced phaco tip used during torsional phacoemulsification in hard cataracts on intraoperative energy use and surgical times, as well as their effects on postoperative anterior segment parameters and the corneal endothelium. MATERIALS AND
methodsIn this retrospective comparative study, 180 eyes of 180 patients who met the inclusion criteria were included, comprising 90 patients in the 45° Intrepid Balanced phaco tip group and 90 patients in the 45° Kelman phaco tip group. Clinical findings were obtained preoperatively and on postoperative Day 1 and month 1, corneal endothelial and morphological parameters assessed by specular microscopy, optical biometry measurements were obtained, and intraoperative phacoemulsification device parameters were recorded. The groups were compared in terms of preoperative characteristics, intraoperative parameters, and postoperative corneal findings.
resultsThere were no significant differences between the groups in terms of preoperative demographic or ocular characteristics. Compared with the Kelman group, the Intrepid Balanced group had significantly lower mean torsional amplitude, torsional ultrasound time, cumulative dissipated energy, aspiration time, and fluid usage (all p ≤ 0.007). However, there was no significant difference in total surgical time (p = 0.115). At postoperative month 1, the endothelial cell density was significantly greater in the Intrepid Balanced group than in the Kelman group (2075.52 ± 346.24 vs. 1929.96 ± 317.29 cells/mm
conclusionIn torsional phacoemulsification for hard cataracts, the 45° Intrepid Balanced phaco tip was associated with greater intraoperative efficiency and less endothelial damage than the 45° Kelman phaco tip. These findings suggest that the Intrepid Balanced tip may offer advantages in terms of intraoperative efficiency and endothelial preservation under the surgical settings used in this study.
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