Effect of Limbal Relaxing Incisions on Corneal Aberrations

Eliwa, Tamer Fahmy; Abdellatif, Mona Kamal; Hamza, Ismail

doi:10.3928/1081597x-20160121-02

Cited by 20 publications

(14 citation statements)

References 26 publications

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“…Moreover, 21.3-22.4% of patients with cataract have 1.00 dioptre (D) to 1.50 D of corneal astigmatism, with 10.6% to 12.4% of patients having 1.50 D to 2.00 D and 8.20% to 13.0% of patients having 2.00 D or more [1,2]. Compared with the conventional approaches, like corneal relaxing incisions (CRI), limbal relaxing incisions (LRI) and laser-assisted in situ keratomileusis (LASIK) [3][4][5], toric intraocular lens (IOL) has become an increasingly common technique due to its great advantages in predictability, stability and safety.…”

Section: Introductionmentioning

confidence: 99%

Early Postoperative Rotational stability and its related factors of a single-piece acrylic toric intraocular lens

He³

et al. 2019

Eye

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Purpose In the present study, we aimed to evaluate the early postoperative rotational stability of TECNIS toric intraocular lens (IOL) and analyse its correlation with preoperative and intraoperative parameters. Methods A total of 102 eyes from 87 cataract patients who underwent implantation of TECNIS toric IOL during July 2016 to November 2017 were enrolled in this retrospective study. Preoperative parameters including corneal astigmatism, axial length (AL), lens thickness (LT), anterior chamber depth (ACD) and sulcus-to-sulcus (STS), were determined. The area of capsulorhexis was measured with Rhinoceros 5.0 software. The follow-up examinations including the residual astigmatism (RAS) and postoperative toric IOL axis, were performed at 1 month and 3 months after surgery. Results RAS was −0.84 ± 0.88 D at 1 month and −0.81 ± 0.89 D at 3 months after surgery. The rotation of toric IOL at 3 months was 4.83 ± 3.65°. The Pearson's r of ACD, horizontal and vertical STS, and toric IOL target axis was 0.011, 0.039, 0.045 and 0.082. The toric IOL rotation was positively correlated with the area of capsulorhexis (r = 0.522, P = 0.0003), LT (r = 0.288, P = 0.003) and AL (r = 0.259, P = 0.009). As for the area of capsulorhexis, the regressive equation was: y = 0.682 × −13.105, demonstrating that the diameter of capsulorhexis should be controlled within 5.8 mm to maintain the toric IOL rotation within 5.0°. Conclusions TECNIS toric IOLs possessed great early postoperative rotational stability. The area of capsulorhexis, AL and LT were positively correlated with postoperative rotational stability. A capsulorhexis within 5.8 mm had an important significance in improving rotational stability.

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Section: Introductionmentioning

confidence: 99%

Early Postoperative Rotational stability and its related factors of a single-piece acrylic toric intraocular lens

He³

et al. 2019

Eye

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“…Overcorrections are unusual under correction to occur. Limbal relaxing incisions also known to have a neutral effect on corneal aberrations [7]. Another study revealed aberration was significantly increased in the limbal The postoperative uncorrected visual acuity at 4 weeks 0.0±0.15 with a best corrected visual acuity was 0.0±0.1.…”

Section: : Uncorrected Visual Acuity Preoperatively and Postoperativelymentioning

confidence: 97%

“…Advancements in preoperative diagnostic tests and surgical techniques, as well as increased availability of premium intraocular lens (IOL) implants, have escalated patient expectations, thus making accurate management of preexisting astigmatism mandatory in order to deliver optimal visual outcome. Astigmatism management in studied issue, and many techniques are available for its correction, namely relaxing incisions (LRIs), arcuate keratotomies, toric intraocular lenses (IOL), paired incisions on the steep axis or subsequent excimer laser ablation t 20% of all cataract patients have clinically significant astigmatism, usually Though Limbal relaxing incisions are known to be effective in correcting corneal astigmatism diopters, recent studies indicate that it can be used to correct corneal astigmatism upto the level of 2.5 D. It works well when performed during phacoemulsification and can be used independently to correct surgically induced astigmatism as well [7].…”

Section: : Uncorrected Visual Acuity Preoperatively and Postoperativelymentioning

confidence: 99%

“…The difference between the visual acuity preoperatively and post operatively was found to be statistically significant with a p<0.01 by employing the ance (ANOVA). The difference in visual acuity at 4 weeks and 12 weeks was not phacoemulsification and can be used independently to correct surgically induced astigmatism as well [7].…”

Section: : Uncorrected Visual Acuity Preoperatively and Postoperativelymentioning

confidence: 99%

“…If the orthogonal astigmatism, each of the LRI's are placed at the steepest portion of the bow Overcorrections are unusual -it is much more likely for under correction to occur. Limbal relaxing incisions are also known to have a neutral effect on corneal aberrations [7]. Another study revealed quatrefoil aberration was significantly increased in the limbal UCVA ISSN-2321-127X…”

Section: : Uncorrected Visual Acuity Preoperatively and Postoperativelymentioning

confidence: 99%

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A study on efficacy of limbal relaxing incisions in correcting corneal astigmatism along with clear corneal phacoemulsification in a tertiary eye care centre in South India

2017

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Aim: The main aim of this study was to study the effectiveness of limbal relaxing incisions in correcting corneal astigmatism when combined with clear corneal phacoemulsification. Materials and Methods: 50 eyes of 37 patients satisfying the inclusion and exclusion criteria were included in the study. After adequate pre operative workup, all patients underwent limbal relaxing incisions coupled with clear corneal phacoemulsification. The incisions were calculated based on Gills nomogram. Postoperative visual acuity and corneal topography were performed to assess the correction of corneal astigmatism. Results: The mean age of our study population was 57.08± 10.07 years. 50 eyes of 21 males and 16 females were included in our study. The mean preoperative Uncorrected Visual Acuity was 1.0 with a standard deviation of 0.5 (in logMAR) and the best spectacle corrected visual acuity was 0.8 with a standard deviation of 0.4. The postoperative uncorrected visual acuity at 4 weeks 0.0±0.15 with a best corrected visual acuity was 0.09±0.1. At 12 weeks, uncorrected visual acuity was 0.0 with a standard deviation 0.07. There was 71.8% decrease in central corneal astigmatism after limbal relaxing incisions. Conclusion: Therefore we conclude that limbal relaxing incisions can be used effectively in conjunction with cataract surgery to reduce the astigmatism <3 D at the corneal level and aids us in providing spectacle free optimal distance vision in patients.

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Toric intraocular lens versus limbal relaxing incisions for corneal astigmatism after phacoemulsification

Lake

Victor²,

Clare

et al. 2019

Cochrane Database of Systematic Reviews

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Effect of Limbal Relaxing Incisions on Corneal Aberrations

Abstract: Limbal relaxing incision is an effective method in reducing corneal astigmatism with neutral effect on corneal aberrations.

Cited by 20 publications

References 26 publications

Early Postoperative Rotational stability and its related factors of a single-piece acrylic toric intraocular lens

Early Postoperative Rotational stability and its related factors of a single-piece acrylic toric intraocular lens

A study on efficacy of limbal relaxing incisions in correcting corneal astigmatism along with clear corneal phacoemulsification in a tertiary eye care centre in South India

Toric intraocular lens versus limbal relaxing incisions for corneal astigmatism after phacoemulsification

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