Complications of foldable intraocular lenses requiring explantation or secondary intervention—2007 survey update

Mamalis, Nick; Brubaker, Jacob W.; Davis, Don; Espandar, Ladan; Werner, Liliana

doi:10.1016/j.jcrs.2008.05.046

Cited by 144 publications

(135 citation statements)

References 37 publications

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“…1 Even with modern biometry methods, refractive surprises due to incorrect IOL power calculations still occur, on the order of 45% of cases in one large series. 2 Management of refractive errors after cataract operations includes spectacles or contact lens, secondary laser vision correction, IOL exchange, or piggyback lens implantation.…”

Section: Introductionmentioning

confidence: 99%

Assessment of a new hydrophilic acrylic supplementary IOL for sulcus fixation in pseudophakic cadaver eyes

Reiter

Werner

Guan

et al. 2017

Eye

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Purpose Management of refractive errors after cataract surgery includes spectacles or contact lens, secondary laser vision correction, intraocular lens (IOL) exchange, or piggyback lens implantation. We evaluated for the first time a single-piece hydrophilic acrylic IOL designed for supplementary sulcus fixation in postmortem pseudophakic human eyes. Methods Pseudophakic human cadaver eyes were imaged by anterior segment optical coherence tomography (AS-OCT) to assess position of the primary IOL. Eyes were prepared as per the Miyake-Apple technique. The supplementary IOL (Medicontur A4 Addon IOL family) was then inserted into the ciliary sulcus. AS-OCT and photographs from anterior and posterior views were used to assess IOL centration, tilt, and interlenticular distance from the primary IOL. Results Data were obtained from 12 eyes having primary IOLs of varying materials and designs in the bag and representing different sizes of eyes and severity of Soemmering's ring formation. The A4 Addon IOL was successfully inserted into the ciliary sulcus and was well centered in all cases. Four cases of tilt were observed on AS-OCT: three with mild tilt due to pre-existing zonular dehiscence, and one due to a localized area of Soemmering's ring formation. Interlenticular distance ranged from 0.34 to 1.24 mm and was not dependent on severity of Soemmering's ring or type of primary IOL. Conclusions The A4 Addon IOL was designed for sulcus fixation as a supplementary lens, with a large diameter, a square-shaped optic, four smooth loop haptics, and a convex-concave optical surface. It exhibited appropriate centration and interlenticular distance with different primary in-the-bag IOLs.

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Section: Introductionmentioning

confidence: 99%

Assessment of a new hydrophilic acrylic supplementary IOL for sulcus fixation in pseudophakic cadaver eyes

Reiter

Werner

Guan

et al. 2017

Eye

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“…No case of IOL opacification has been reported in patients with this lens in articles published in scientific journals indexed in PubMed and SciELO (keywords searched: Ioflex, lens opacification, lens calcification). Although few hydrophilic acrylic IOL designs are approved by the Food and Drug Administration (FDA) to be used in the United States (2) , they are largely commercialized in other countries.…”

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confidence: 99%

Microscopic analysis of opacification in Ioflex® hydrophilic acrylic intraocular lenses

Ventura

Lira

et al. 2012

Rev. bras.oftalmol.

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Five cases of intraocular lens (IOL) opacification in patients implanted with the Mediphacos Ioflex® IOL are described. Clinical data in each case was obtained from the patient's medical record. The five explanted IOLs underwent gross and light microscopic analysis. Selected lenses were processed for further evaluation and multiple sagittal cuts were stained with the alizarin red and von Kossa methods. Light microscope analysis confirmed the presence of deposits on and within the lens, which stained positive for calcium. The reason why calcification has occurred in these cases remains unclear, but surgeons should be aware of this potential late postoperative complication.Keywords: Lenses, intraocular; Lens implantation, intraocular; Reoperation; Device removal; Microscopy; Case reports RESUMO Cinco casos de opacificação de lente intraocular (LIO) em pacientes implantados com a LIO Ioflex® da Mediphacos são descritos. Os dados clínicos dos pacientes foram obtidos a partir dos prontuários médicos. As cinco LIOs explantadas foram enviadas para análise macroscópica e sob microscopia óptica. Algumas lentes foram processadas para análise adicional e múltiplos cortes sagitais foram corados pelos métodos de vermelho de alizarina e von Kossa. A análise sob microscopia óptica confirmou a presença de depósitos na superfície e no corpo da lente, que coraram positivamente para cálcio. A razão pela qual a calcificação ocorreu nestes casos permanece obscura. Entretanto, cirurgiões devem estar atentos para esta potencial complicação tardia.Descritores: Lentes intraoculares; Implante de lenteintraocular; Reoperação; Remoção de dispositivo; Microscopia; Relatos de casos 1 Fundação Altino Ventura -FAV -Recife (PE), Brazil;

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“…glare) is a common reason for IOL exchange [1]. Glare is caused by increased forward light scatter (straylight) [2].…”

Section: Introductionmentioning

confidence: 99%

Validation of a spectral light scattering method to differentiate large from small particles in intraocular lenses

Łabuz

Papadatou

Vargas-Martı́n

et al. 2017

Biomed. Opt. Express

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Abstract:A psychophysical approach has been designed to measure straylight from intraocular lenses (IOLs) in vitro. This approach uses a clinical straylight meter (C-Quant) and an observer's eye as optical detector. Based on this, we introduced a method for study of straylight-wavelength dependency for IOLs. This dependency can be used to distinguish between 2 types of scattering particles (small and large) as defined by Mie theory. Validation was performed using a turbidity standard and scattering filters. Several IOLs were analyzed to identify potential scattering sources. Large particles were found to predominate in scattering from the studied lenses. This was confirmed by straylight-angular dependency found in these IOLs.

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Complications of foldable intraocular lenses requiring explantation or secondary intervention—2007 survey update

Cited by 144 publications

References 37 publications

Assessment of a new hydrophilic acrylic supplementary IOL for sulcus fixation in pseudophakic cadaver eyes

Assessment of a new hydrophilic acrylic supplementary IOL for sulcus fixation in pseudophakic cadaver eyes

Microscopic analysis of opacification in Ioflex® hydrophilic acrylic intraocular lenses

Validation of a spectral light scattering method to differentiate large from small particles in intraocular lenses

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