Comparison of corneal endothelial changes following phacoemulsification with transversal and torsional phacoemulsification machines
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(1.Department of Ophthalmology, School of Medicine, Harran University, Sanliurfa 63300, Turkey;2.Department of Ophthalmology, Kayseri Training and Research Hospital, Kayseri 38000, Turkey)

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None.
Conflicts of Interest:Ataş M, None; Demircan S, None; Karatepe Haşhaş AS, None; Gülhan A, None; Zararsız G, None.
ACKNOWLEDGEMENTS: We thank Dr Faruk Balkaya (English Department of Kayseri Erciyes University) for his contribution to English terms and language.

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    Abstract:

    AIM:To compare if there is an improvement in visual functions with age-related cataracts between patients receiving a aspherical intraocular lens (IOL) based on corneal wavefront aberration and patients randomly assigned lenses.METHODS:A total of 124 eyes of 124 patients with age-related cataracts were placed in experimental group and a group receiving randomly assigned (RA) lenses. The experimental group was undergone Pentacam corneal spherical aberration measurement before surgery; the targeted range for residual total spherical aberration after surgery was set to 0-0.3 μm. Patients with a corneal spherical aberration <0.3 μm were implanted with a zero-spherical aberration advanced optics (AO) aspherical IOL and patients with an aberration ≥0.3 μm received a Tecnis Z9003 aspherical lens in experimental group. RA patients were randomly implanted with an AO lens or a Tecnis Z9003 lens. Three months after surgery total spherical aberration, photopic/mesopic contrast sensitivities, photopic/mesopic with glare contrast sensitivities, and logMAR vision were measured.RESULTS:Statistical analysis on logMAR vision showed no significant difference between two groups (P=0.413). The post-surgical total spherical aberration was 0.126±0.097 μm and 0.152±0.151 μm in the experimental and RA groups, respectively (P=0.12). The mesopic contrast sensitivities at spatial frequencies of 6, 12 and 18 c/d in the experimental group were significantly higher than of the RA group (P=0.00; P=0.04; P=0.02). The mesopic with glare contrast sensitivity in the experimental group at a spatial frequency of 18 c/d was also significantly higher vs the RA group (P=0.01).CONCLUSION:Pre-surgical corneal spherical aberration measurement in cataract patients followed by customized selection of aspherical IOL implants improved mesopic contrast sensitivities at high spatial frequencies, and thus is a superior strategy compared to the random selection of aspherical IOL implants.

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Mustafa Ata&#;, Süleyman Demircan, Arzu Seyhan Karatepe Ha&#;ha&#;,et al. Comparison of corneal endothelial changes following phacoemulsification with transversal and torsional phacoemulsification machines. Int J Ophthalmol, 2014,7(5):822-827

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Publication History
  • Received:November 02,2013
  • Revised:March 04,2014
  • Adopted:March 04,2014
  • Online: October 20,2014
  • Published: