Prevalence of corneal astigmatism before cataract surgery

Ferrer-Blasco, Teresa; Montés‐Micó, Robert; Peixoto-de-Matos, Sofia C.; González-Meijóme, José Manuel; Cerviño, Alejandro

doi:10.1016/j.jcrs.2008.09.027

Cited by 353 publications

(283 citation statements)

References 24 publications

(23 reference statements)

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“…The distribution of corneal astigmatism in cataract cases has been reported and most cases were within 3D [11,12]. In the current study, we evaluated the postoperative outcomes of toric IOLs with different levels of corneal astigmatism and compared the results to those with non-toric IOL.…”

Section: Discussionmentioning

confidence: 99%

Comparison between Toric and Non-Toric Intraocular Lenses in Patients with Corneal Astigmatism: A One-Year Multicenter Study

Miyajima¹,

Inoue²

2016

J Clin Exp Ophthalmol

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Objective: To compare the clinical results obtained with a toric intraocular lens (IOL) and non-toric IOL in eyes with corneal astigmatism.Methods: This multicenter retrospective study included eyes with corneal astigmatism ranging from 0.75 diopter (D) to 3.00 D that were implanted with a toric IOL and a non-toric IOL. Non-toric IOLs were implanted before toric IOLs were approved, and the eyes were divided into three groups (T3, T4, or T5) depending on the preoperative degree of corneal astigmatism. Residual refractive cylinder, uncorrected distance visual acuity (UDVA), and contrast sensitivity were compared more than 1 year after implantation. Results:The toric group included 149 eyes (mean patient age, 73.7 ± 7.9 years standard deviation, SD) and the non-toric group included 121 eyes (mean patient age, 76.2 ± 5.9 years). One year postoperatively, the respective residual refractive cylinder values and ± SD of the toric/non-toric groups were -0.61 ± 0.43/-1.45 ± 0.98 D (all eyes), -0.58 ± 0.42/-1.14 ± 0.70 D (T3), -0.59 ± 0.42/-1.63 ± 0.99 D (T4), and -0.67 ± 0.47/-2.18 ± 1.27 D (T5). The respective logarithm of the minimum angle of resolution UDVA values was 0.00 ± 0.12/0.16 ± 0.20 (all eyes), 0.00 ± 0.11/0.13 ± 0.18 (T3), 0.00 ± 0.13/0.25 ± 0.23 (T4), and 0.00 ± 0.11/0.17 ± 0.16 (T5). The toric group had better cylinder and UDVA outcome values; the difference between the groups reached significance (p<0.0001). In the toric group, the IOL rotation after implantation was 4.3 ± 4.0 degrees. Conclusion:Toric IOLs reduced the residual refractive cylinder in cases with corneal astigmatism between 0.75 and 3.00 D, and this effect was similar among different toric models. Toric IOLs are useful to improve the UDVA after cataract surgery.

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Section: Discussionmentioning

confidence: 99%

Comparison between Toric and Non-Toric Intraocular Lenses in Patients with Corneal Astigmatism: A One-Year Multicenter Study

Miyajima¹,

Inoue²

2016

J Clin Exp Ophthalmol

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“…A significant number of patients having cataract surgery have a degree of pre existing corneal astigmatism (8)(9)(10)(11) . Estimates of the incidence of significant, naturally occurring astigmatism vary widely from 7.5% to 75% (11)(12)(13) .…”

Section: Prevalence Of Astigmatismmentioning

confidence: 99%

“…In a study comprising 4540 eyes in 2415 patients. Figure 1 is a histogram with frequency distribution of corneal astigmatism values for the entire sample showing that 13.2% of eyes did not present corneal astigmatism, 64.6% had corneal astigmatism between 0.25 and 1.25 D, and 22.2%had astigmatism of 1.50 D or higher (9) .…”

Section: Prevalence Of Astigmatismmentioning

confidence: 99%

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Astigmatism treatment during phacoemulsification: a review of current surgical strategies and their rationale

Freitas¹,

Boteon²,

Carvalho³

et al. 2013

Rev. bras.oftalmol.

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“…1 Uncorrected astigmatism reduces visual acuity and increases spectacle dependence; this can reduce quality of life 2 and increase overall economic costs. 3 Correcting astigmatism at the time of surgery removes the problem of meridonal magnification caused by spectacle astigmatic correction, which distorts shape and affects spatial perception.…”

mentioning

confidence: 99%

Rotational and centration stability of an aspheric intraocular lens with a simulated toric design

Buckhurst

Wolffsohn

Naroo

et al. 2010

Journal of Cataract and Refractive Surgery

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Prevalence of corneal astigmatism before cataract surgery

Cited by 353 publications

References 24 publications

Comparison between Toric and Non-Toric Intraocular Lenses in Patients with Corneal Astigmatism: A One-Year Multicenter Study

Comparison between Toric and Non-Toric Intraocular Lenses in Patients with Corneal Astigmatism: A One-Year Multicenter Study

Astigmatism treatment during phacoemulsification: a review of current surgical strategies and their rationale

Rotational and centration stability of an aspheric intraocular lens with a simulated toric design

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