A prospective, randomised comparison of single and three piece acrylic foldable intraocular lenses

Nejima, Ryohei; Miyata, Kazunori; Honbou, Masato; Tokunaga, Tadatoshi; Tanabe, Taro; Sato, Masaki; Oshika, Tetsuro

doi:10.1136/bjo.2003.037663

Cited by 58 publications

(23 citation statements)

References 36 publications

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“…There was a small difference in PCO frequency between the hydrophobic one-piece and three-piece IOLs, but there was also a significant difference in age and prevalence of diabetes between these groups. Previous studies have shown no difference in PCO frequency between one-piece and three-piece IOL design in comparable groups (Nejima et al 2004(Nejima et al , 2006Leydolt et al 2007). That hydrophilic IOLs have a higher incidence of PCO than hydrophobic IOLs has been shown before, and this study confirms that this is the case even in a clinical setting with long-term follow-up (Billotte & Berdaux 2004).…”

Section: Discussionmentioning

confidence: 82%

Economic considerations related to choice of intraocular lens (IOL) and posterior capsule opacification frequency – a comparison of three different IOLs

Cullin

Busch

Lundström

2012

Acta Ophthalmologica

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ABSTRACT.Purpose: To evaluate the posterior capsule opacification (PCO) rates in three different modern standard intraocular lenses (IOL) and analyse the related cost. Methods: Retrospective study of medical records from 1527 patients who underwent uneventful cataract surgery by phacoemulsification with posterior chamber implantation of either AcrySof SN60 (n = 375), Akreos Adapt (n = 350) or Tecnis Acryl IOL (n = 801). All surgeries were performed by the same surgeon using the same surgical technique and equipment. Primary end-point was neodymium:yttrium-aluminium-garnet (Nd:YAG) capsulotomy for visual impairment secondary to PCO. Cost of IOL material and Nd:YAG capsulotomy for PCO was then evaluated and compared between the IOLs. Results: Mean follow-up was 41.5 months, and the only statistically significant variable of developing PCO was IOL type and individual follow-up time. Nd:YAG capsulotomy was performed in 7.47% in the AcrySof group, 17.71% in the Akreos group and 3.75% in the Tecnis group. Average cost for Nd:YAG capsulotomy per surgery was €18.75 in the AcrySof SN60 group, €44.25 in the Akreos Adapt group and €9.25 in the Tecnis Acryl group. The combined cost of cataract surgery and PCO treatment was €9.81 higher in for the Akreos Adapt group than the other two combined.Conclusions: This retrospective study shows that the risk of PCO and Nd:YAG capsulotomy is significantly higher in hydrophilic Akreos IOL compared with both AcrySof and Tecnis hydrophobic IOLs. The increased risk of PCO in the hydrophilic IOL is related to higher total average costs for cataract surgery.

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Section: Discussionmentioning

confidence: 82%

Economic considerations related to choice of intraocular lens (IOL) and posterior capsule opacification frequency – a comparison of three different IOLs

Cullin

Busch

Lundström

2012

Acta Ophthalmologica

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“…The clinical literature includes numerous reports of IOL tilt and decentration at different times after surgery or with different IOL types using commercial Scheimpflug instruments. [22][23][24][25][26][27][28] With these instruments, the optical distortion is presumably not corrected. Only a recent study of IOL tilt and decentration in eyes with phakic lenses 29 using a Nidek Scheimpflug system mentions that images were corrected using custom algorithms.…”

Section: J Cataract Refract Surg 2007; 33:418-429 Q 2007 Ascrs and Escrsmentioning

confidence: 98%

Tilt and decentration of intraocular lenses in vivo from Purkinje and Scheimpflug imaging

Castro¹,

Rosales²,

Marcos³

2007

Journal of Cataract and Refractive Surgery

180

134

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“…9 Measurements of the IOL tilt and decentration measured with Scheimpflug imaging have been reported in the clinical literature, although in these instruments optical distortion is presumably not corrected. [10][11][12][13][14][15][16] Custom correcting algorithms have been used in a report of IOL tilt and decentration of phakic lenses and measured with a refurbished Nidek Scheimpflug system, which is no longer commercially available. 17 Here, we review the development (hardware and software), validation and measurements of two instruments based on Purkinje and Scheimpflug imaging, developed at the Visual Optics and Biophotonics Laboratory (Instituto de Óptica, Consejo Superior de Investigaciones Científicas).…”

mentioning

confidence: 99%

Intraocular lens alignment from Purkinje and Scheimpflug imaging

Rosales

Castro

Jiménez-Alfaro

et al. 2010

Clinical and Experimental Optometry

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The improved designs of intraocular lenses (IOLs) implanted during cataract surgery demand understanding of the possible effects of lens misalignment on optical performance. In this review, we describe the implementation, set-up and validation of two methods to measure in vivo tilt and decentration of IOLs, one based on Purkinje imaging and the other on Scheimpflug imaging. The Purkinje system images the reflections of an oblique collimated light source on the anterior cornea and anterior and posterior IOL surfaces and relies on the well supported assumption of the linearity of the Purkinje images with respect to IOL tilt and decentration. Scheimpflug imaging requires geometrical distortion correction and image processing techniques to retrieve the pupillary axis, IOL axis and pupil centre from the three-dimensional anterior segment image of the eye. Validation of the techniques using a physical eye model indicates that IOL tilt is estimated within an accuracy of 0.261 degree and decentration within 0.161 mm. Measurements on patients implanted with aspheric IOLs indicate that IOL tilt and decentration tend to be mirror symmetric between left and right eyes. The average tilt was 1.54 degrees and the average decentration was 0.21 mm. Simulated aberration patterns using custom models of the patients eyes, built using anatomical data of the anterior cornea and foveal position, the IOL geometry and the measured IOL tilt and decentration predict the experimental wave aberrations measured using laser ray tracing aberrometry on the same eyes. This reveals a relatively minor contribution of IOL tilt and decentration on the higher-order aberrations of the normal pseudophakic eye.

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A prospective, randomised comparison of single and three piece acrylic foldable intraocular lenses

Cited by 58 publications

References 36 publications

Economic considerations related to choice of intraocular lens (IOL) and posterior capsule opacification frequency – a comparison of three different IOLs

Economic considerations related to choice of intraocular lens (IOL) and posterior capsule opacification frequency – a comparison of three different IOLs

Tilt and decentration of intraocular lenses in vivo from Purkinje and Scheimpflug imaging

Intraocular lens alignment from Purkinje and Scheimpflug imaging

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