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193256

Toric intraocular lens implantation in comparison to Femtoassisted astigmatic keratotomy to correct astigmatism during phacoemulsification cataract surgeries

Article

Last updated: 23 Jan 2023

Subjects

-

Tags

Cataract and refractive surgery.

Abstract

Background: for the comparison of the visual outcome including visual acuity and target refraction, surgical operative difficulties, and the results of the toric intraocular lens (IOL) implantation versus Femto-assisted astigmatic keratotomy (AK) in the correction of astigmatism during phacoemulsification. Subjects & Methods: A randomized comparative interventional study was demonstrated on cases with cataract surgical operations who were engaged from Alex Eye Center outpatient clinic, From May 2017 to January 2019. Forty-four eyes were involved in the current work; all of them had visually significant cataracts and mild manifest astigmatism (1.25 to 3.00 diopters). Twenty-two eyes had treated by Femto-assisted AK with the usage of a planned depth, optical zone, and length of the keratotomy valuated with Bascom palmer nomogram and adapted by Donnenfield nomogram and followed by implanting of an intraocular lens. A further 22 eyes were treated by Clear corneal 2.4 mm phacoemulsification with toric IOL implantation. All cases were followed-up for 6-months. Results: UCVA has exhibited a better outcome with a statistically significant change in the toric IOL group (mean of 0.73) in comparison to the AK group (mean of 0.57) at the end of the follow-up period. Also, BSCVA gives a better outcome in the toric IOL group (mean of 0.9) in comparison to the AK group (mean of 0.8). The difference has a statistical significance. Vector analysis concluded that: no significant change was existing in targetinduced astigmatism (TIA) in the studied groups. The surgically induced astigmatism (SIA) was high in the toric group in comparison to the AK group with a mean of 1.23 in the AK group and 2.17 in the toric group and a P-value of 0.0001. The difference vector (DV) mean was 1.16 in the AK group and 0.92 in the toric group, P-value of 0.05 (no statistical significance), and the correction index (CI) means in the AK group and the toric IOL group were 0.75±0.53, 0.81±0.35 respectively. Conclusion: A comparison of astigmatic keratotomy and the toric IOLs in the treatment of corneal astigmatism during phacoemulsification showed evidence that both techniques are efficient, predictable, and safe in reducing corneal astigmatism with an observed superiority of the toric IOLs this superiority of the toric IOL was observed in the better UCVA, BCVA, less residual astigmatism, and better indices of vector analysis. 

DOI

10.21608/ejcrs.2020.193256

Keywords

Astigmatism, femtosecond laser, IOL, Catarct

Volume

26

Article Issue

1

Related Issue

26938

Issue Date

2020-08-01

Receive Date

2020-09-01

Publish Date

2020-09-06

Page Start

16

Page End

25

Print ISSN

1687-6997

Online ISSN

2536-9725

Link

https://ejcrs.journals.ekb.eg/article_193256.html

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https://ejcrs.journals.ekb.eg/service?article_code=193256

Order

3

Type

Original articles

Type Code

1,681

Publication Type

Journal

Publication Title

The Egyptian Journal of Cataract and Refractive Surgery

Publication Link

https://ejcrs.journals.ekb.eg/

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Details

Type

Article

Created At

23 Jan 2023