April 2010
Volume 51, Issue 13
Free
ARVO Annual Meeting Abstract  |   April 2010
Intraocular Lens Power Calculation Using Partial Coherence Laser Interferometry in Eyes With Silicone Oil Endotemponade
Author Affiliations & Notes
  • H. Schwarzer
    Dept of Ophthalmology, RWTH Aachen University, Aachen, Germany
  • Y. Djalali-Talab
    Dept of Ophthalmology, RWTH Aachen University, Aachen, Germany
  • A. K. Vehr
    Dept of Ophthalmology, RWTH Aachen University, Aachen, Germany
  • B. Mazinani
    Dept of Ophthalmology, RWTH Aachen University, Aachen, Germany
  • N. Plange
    Dept of Ophthalmology, RWTH Aachen University, Aachen, Germany
  • P. Walter
    Dept of Ophthalmology, RWTH Aachen University, Aachen, Germany
  • G. Roessler
    Dept of Ophthalmology, RWTH Aachen University, Aachen, Germany
  • Footnotes
    Commercial Relationships  H. Schwarzer, None; Y. Djalali-Talab, None; A.K. Vehr, None; B. Mazinani, None; N. Plange, None; P. Walter, None; G. Roessler, None.
  • Footnotes
    Support  None.
Investigative Ophthalmology & Visual Science April 2010, Vol.51, 5748. doi:
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      H. Schwarzer, Y. Djalali-Talab, A. K. Vehr, B. Mazinani, N. Plange, P. Walter, G. Roessler; Intraocular Lens Power Calculation Using Partial Coherence Laser Interferometry in Eyes With Silicone Oil Endotemponade. Invest. Ophthalmol. Vis. Sci. 2010;51(13):5748.

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Abstract

Purpose: : To assess the predictability of refractive outcome in eyes with conventional (SO) or heavy silicone oil (HSO) as endotamponade undergoing combined oil removal and cataract surgery while using partial coherence laser interferometry (PCI) for optical biometry.

Methods: : We included 20 eyes with silicone oil endotamponade (SO n=10, HSO n=10) and cataract where combined oil removal and cataract surgery including IOL implantation was performed. For biometry we used a Zeiss IOLMaster (Carl Zeiss Meditec, Germany) utilizing Haigis formula for the determination of IOL power and the predicted refractive spherical equivalent (SE) which was compared to the actual refractive outcome at least six weeks after surgery. Additionally axial length measurements were repeated at this visit.

Results: : Mean axial length was 24.64 ± 1.64 mm before and 24.64 ± 1.64 after oil removal with a mean intraindividual deviation of 0.07 ± 0.08 mm (SO 0.07 ± 0.11, HSO 0.07 ± 0.04 mm). The mean predicted SE at baseline was -0.98 ± 0.98 D compared to the refractive outcome of -1.23 ± 1.1 D as the mean intraindividual deviation was 0.63 ± 0.55 D (SO 0.66 ± 0.50 D, HSO 0.60 ± 0.58 D).

Conclusions: : In our analysis optical biometry using PCI generates satisfying results in regard to the postoperative refractive outcome following combined oil removal and cataract surgery. However, in the future this parameter should be investigated on larger patient groups to confirm these results.

Keywords: intraocular lens • refractive error development • vitreous substitutes 
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