Refractive Changes Induced by Intraocular Lens Tilt and Longitudinal Displacement

Lakshminarayanan, Vasudevan; Enoch, Jay M.; Raasch, Thomas W.; Crawford, Brooks; Nygaard, Rolf W.

doi:10.1001/archopht.1986.01050130100030

Cited by 55 publications

(17 citation statements)

References 4 publications

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“…Copyright: to assess IOL tilt and decentration in vivo, using either Purkinje meters [33][34][35][36][37] or Scheimpflug imaging [38,39]. To assess tilt and decentration in relation to HOAs after implantation of an aspheric IOL in patients, clinical studies were conducted [40,41] and it was shown that the limits for tilt and decentration for proper functioning of AIOLs found in laboratory studies were respected after AIOL implantation in vivo, resulting in a reduction of total SA.…”

Section: /3mentioning

confidence: 43%

Tilt and Decentration of Intraocular Lenses-a Brief Review

Sauer¹

2015

AOVS

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Eyes need a flexible, clear and refractively suited lens to provide the retina with sharp images in far and near distance. But even given an optimal lens, the resulting image would be blurred without proper lens positioning, observable in some cases of Marfan syndrome or after ocular trauma with lens dislocation. In contrast, as seen in routine ophthalmologic slit lamp examination, healthy eyes do not suffer from coarse lens misalignment.

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Section: /3mentioning

confidence: 43%

Tilt and Decentration of Intraocular Lenses-a Brief Review

Sauer¹

2015

AOVS

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“…34,35 Tilt, rotation, decentration, and changes in ELP may have even more profound effects with toric, accommodating and multifocal IOLs. 36 All of these factors have implications for the final refractive outcome, while also increasing the risk of aberrations such as astigmatism, halo and coma. 37 Ideally, the capsulotomy should be perfectly circular and overlapping the IOL optic by 0.5 mm for 360 degrees.…”

Section: Anterior Capsulotomymentioning

confidence: 46%

The journey to femtosecond laser-assisted cataract surgery: new beginnings or a false dawn?

Trikha

Turnbull

Morris

et al. 2013

Eye

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Femtosecond laser-assisted cataract surgery (FLACS) represents a potential paradigm shift in cataract surgery, but it is not without controversy. Advocates of the technology herald FLACS as a revolution that promises superior outcomes and an improved safety profile for patients. Conversely, detractors point to the large financial costs involved and claim that similar results are achievable with conventional small-incision phacoemulsification. This review provides a balanced and comprehensive account of the development of FLACS since its inception. It explains the physiology and mechanics underlying the technology, and critically reviews the outcomes and implications of initial studies. The benefits and limitations of using femtosecond laser accuracy to create corneal incisions, anterior capsulotomy, and lens fragmentation are explored, with reference to the main platforms, which currently offer FLACS. Economic considerations are discussed, in addition to the practicalities associated with the implementation of FLACS in a healthcare setting. The influence on surgical training and skills is considered and possible future applications of the technology introduced. While in its infancy, FLACS sets out the exciting possibility of a new level of precision in cataract surgery. However, further work in the form of large scale, phase 3 randomised controlled trials are required to demonstrate whether its theoretical benefits are significant in practice and worthy of the necessary huge financial investment and system overhaul. Whether it gains widespread acceptance is likely to be influenced by a complex interplay of scientific and socio-economic factors in years to come.

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“…7,[20][21][22] Laboratory studies [23][24][25] indicate that these effects are even more important for aspheric IOLs. Numerous studies of IOL tilt and decentration using mostly Purkinje images [26][27][28][29][30] or Scheimpflug photography [31][32][33][34][35] show that with modern IOL design and surgical technique, the average amount of IOL tilt and decentration can be minimized. In the present study, tilt and decentration of a conventional spherical IOL and a prolate surface-modified IOL with negative spherical aberration were compared in an intraindividual setting and correlated with the higher-order wavefront error.…”

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confidence: 46%