Femtosecond Laser-Assisted Astigmatism Correction

Raoof-Daneshvar, Duna

doi:10.5772/18141

Cited by 2 publications

(1 citation statement)

References 52 publications

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“…Описана высокая функциональная результативность данной методики при коррекции индуцированного астигматизма после различных видов кератопластики (сквозной, передней и задней послойной кератопластики) [14,15]. С этой темой связана первая публикация Kiraly L. в 2008 году, посвященная эффективности Фемто-АК в коррекции астигматизма у пациента после сквозной кератопластики [16].…”

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Femtolaser Assisted Cataract Surgeryand Toric Lenses in Patients with Astigmatism. Review

Kulikova

Timofeeva

2020

Oftalʹmologiâ

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The presence of concomitant corneal astigmatism is the most common cause of low visual functions in patients with surgical treatment of cataracts. The implantation of toric intraocular lenses is procedure of choice in the correction of corneal astigmatism from 1.0 DPT and more in patients with cataracts. Successful results depend on several factors, the most important of which: the correct and stable position of the intraocular lens (IOL) in the capsule bag, the absence of residual astigmatism, the choice of the implanted IOL’s model, taking into account material and design of lens elements. Deviation of the cylindrical component by 10 degrees reduces visual acuity up to 35 %. Repeated intervention for the purpose of toric lens reposition, according to the literature, varies from 0,65 to 9 % and is carried out with the rotation of IOL more than 10°. Femtolaser-assisted phacoemulsification allows partially automate the surgical process, making it more efficient and safe, creating a theoretical advantage over manual techniques of surgery. In practice, the capsulorexis formed by the femtolaser is characterized by a regular rounded shape with a given diameter and provides a coating of optical part of IOL for 360°, which, according to various sources, contributes to a lesser degree of decentralization and tilt of the lens in the capsule bag and can be considered as one of the reasons for obtaining a more accurate refractive result and, as a consequence, higher visual functions. The review presents the results of clinical studies of corneal astigmatism correction during standard and femtolaser-assisted phacoemulsification with implantation of various models of toric IOLs: visual acuity, rotational stability, residual astigmatism percentage, wave front change. Researchers continue to discuss the advantages and disadvantages of modern technologies. However, the problem of increasing the predictability of the surgical outcome in order to obtain a higher refractive result both in the early and in the long-term postoperative period remains unquestionable.

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Femtolaser Assisted Cataract Surgeryand Toric Lenses in Patients with Astigmatism. Review

Kulikova

Timofeeva

2020

Oftalʹmologiâ

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Development of a universal toric intraocular lens calculator

Hjelmstad

Sayegh²

2014

Ophthalmic Technologies XXIV

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We present a method for calculating the ideal toric lens to implant in astigmatic patients following cataract surgery. We show that the online calculators provided by major toric IOL manufacturers are insufficient for both theoretical and practical reasons. We reveal important theoretical shortcomings in their approach, illustrated by a number of cases which demonstrate how the approach can lead to errors in lens selection. Our approach combines the spherical and cylindrical power calculations into one, and allows for lens data from any manufacturer to be used, eliminating the reliance on multiple programs.

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Femtosecond Laser-Assisted Astigmatism Correction

Cited by 2 publications

References 52 publications

Femtolaser Assisted Cataract Surgeryand Toric Lenses in Patients with Astigmatism. Review

Femtolaser Assisted Cataract Surgeryand Toric Lenses in Patients with Astigmatism. Review

Development of a universal toric intraocular lens calculator

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