One-year follow-up of toric intraocular lens implantation in forme fruste keratoconus

Navas, Alejandro; Suárez, Raúl Gabriel Pérez

doi:10.1016/j.jcrs.2009.05.043

Cited by 67 publications

(31 citation statements)

References 12 publications

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“…The first T IOLs were inserted in phakic eyes for purely refractive purposes on stable keratoconus (Alfonso et al, 2011, Budo et al, 2005, Kamburoglu et al, 2007, Kamiya et al, 2008, Kamiya et al, 2011, Navas et al, 2009, Sauder et al, 2003, Sokel et al, 1973. Toric IOLs have been considered for pseudophakic implantation since 2003(SauderJonas, 2003 and their worthiness is currently under investigation (Jaimes et al, 2011).…”

Section: Toric Intraocular Lens (Iol) Implantationmentioning

confidence: 99%

Cataract Surgery in Keratoconus with Irregular Astigmatism

Bourges¹

2012

Astigmatism - Optics, Physiology and Management

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Section: Toric Intraocular Lens (Iol) Implantationmentioning

confidence: 99%

Cataract Surgery in Keratoconus with Irregular Astigmatism

Bourges¹

2012

Astigmatism - Optics, Physiology and Management

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“…In patients with a corneal ectasia disorder, such as keratoconus or pellucid marginal degeneration (PMD), cataract surgery or refractive lens exchange with an acrylic or silicone toric IOL implantation has been described. (Sauder and Jonas 2003;Navas and Suarez 2009;Luck 2010;Visser, Gast et al 2011) Two case reports have described Acrysof toric IOL implantation, with cylinder powers up to 6.0 D, in patients with keratoconus. (Navas and Suarez 2009;Visser, Gast et al 2011 .…”

Section: Toric Iols In Irregular Astigmatismmentioning

confidence: 99%

“…(Sauder and Jonas 2003;Navas and Suarez 2009;Luck 2010;Visser, Gast et al 2011) Two case reports have described Acrysof toric IOL implantation, with cylinder powers up to 6.0 D, in patients with keratoconus. (Navas and Suarez 2009;Visser, Gast et al 2011 . As a result, the mean UDVA in post-keratoplasty patients was 0.50 ± 0.48 LogMAR (equivalent to 0.32 Snellen), which was significantly lower than in non-keratoplasty patients (0.16 ± 0.16 LogMAR/ 0.69 Snellen).…”

Section: Toric Iols In Irregular Astigmatismmentioning

confidence: 99%

Toric Intraocular Lenses in Cataract Surgery

Visser¹

2012

Astigmatism - Optics, Physiology and Management

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“…53 Studies fitting toric IOLs to patients with irregular astigmatism demonstrate a large reduction in residual astigmatic error and improved visual acuity. [47][48][49][50]54,55 Toric IOLs cannot fully correct irregular astigmatism but they can reduce overall levels of residual astigmatism.…”

Section: Use Of Toric Iols In Keratoconus and Post-keratoplastymentioning

confidence: 99%

Surgical correction of astigmatism during cataract surgery

Buckhurst

Wolffsohn

Davies

et al. 2010

Clinical and Experimental Optometry

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High levels of corneal astigmatism are prevalent in a significant proportion of the population. During cataract surgery pre-existing astigmatism can be corrected using single or paired incisions on the steep axis of the cornea, using relaxing incisions or with the use of a toric intraocular lens. This review provides an overview of the conventional methods of astigmatic correction during cataract surgery and in particular, discusses the various types of toric lenses presently available and the techniques used in determining the correct axis for the placement of such lenses. Furthermore, the potential causes of rotation in toric lenses are identified, along with techniques for assessing and quantifying the amount of rotation and subsequent management options for addressing postoperative rotation. Correcting corneal astigmatism during cataract surgery can increase spectacle independence. For the patient, this has economic benefits 4 as well as desirable cosmetic and practical advantages. Spectacle correction of astigmatism creates meridional magnification, which when coupled with the associated back vertex distance produces retinal images that are asymmetrically magnified and distorted. Such images have been reported to reduce spatial perception 5 and adaptation to them is particularly challenging for elderly individuals, 6 in whom cataracts are more prevalent. Contrary to this, if corneal astigmatism is corrected at the corneal or intraocular lens (IOL) plane, then no significant meridional magnification is induced due to a negligible vertex distance. 7The effect of clear corneal incisions (CCIs) on surgically-induced astigmatism has been extensively examined. If placed along the steep corneal axis, the clear corneal incisions flatten the cornea, reducing the residual astigmatism. The larger the clear corneal incision, the greater the flattening effect. 8 Studies have shown that the average surgically induced astigmatism using a 3.0 to 3.2 mm clear corneal incision is~0.50 D.9,10 The temporal cornea allows easy access for incisions and is the preferred site of most surgeons, 11 however, incisions performed on the steepest axis result in superior postoperative uncorrected vision.12 Opposite clear corneal incisions require a second clear corneal incision to be placed along the steep axis of the cornea on the opposing side of the pupil. This has a larger effect than a single clear corneal incision and can correct more than one dioptre of corneal astigmatism.13,14 Limbal relaxing incisions, otherwise known as peripheral corneal relaxing incisions, can also be used to correct astigmatism C L I N I C A L A N D E X P E R I M E N T A LOPTOMETRY

show abstract

One-year follow-up of toric intraocular lens implantation in forme fruste keratoconus

Cited by 67 publications

References 12 publications

Cataract Surgery in Keratoconus with Irregular Astigmatism

Cataract Surgery in Keratoconus with Irregular Astigmatism

Toric Intraocular Lenses in Cataract Surgery

Surgical correction of astigmatism during cataract surgery

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