Evaluation of corneal biomechanical parameters after simultaneous phacoemulsification with intraocular lens implantation and limbal relaxing incisions

Kamiya, Kazutaka; Shimizu, Kimiya; Ohmoto, Fumiko; Amano, Rie

doi:10.1016/j.jcrs.2010.08.045

Cited by 15 publications

(8 citation statements)

References 24 publications

(20 reference statements)

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“…6 0.00 0.00 -IOL = intraocular lens; LRI = limbal relaxing incisions; SD = standard deviation;Wilcoxon test -preoperative cylinder x 1-month( 1 ), 3-month( 3 ) and 6-month( 6 ) postoperative cylinder; (*) Mann-Whitney U test Table 2 Shows preoperative, 1-month, 3-months and 6-months postoperative manifest cylinder refraction of both groups All patients have accomplished the follow up period of 6 months. Table 2 shows preoperative, 1-month, 3-month and 6-month postoperative manifest cylinder refraction of both groups.…”

Section: Resultsmentioning

confidence: 99%

“…(3) One popular approach to correct corneal astigmatism simultaneously to cataract surgery is to treat pre-existing cylinder by creating limbal relaxing incisions (LRI). (4)(5)(6) Toric intraocular lens (IOL) implantation is another valuable option in the treatment of corneal astigmatism in cataract patients. (7) To ascertain which approach constitutes a better surgical option remains under debate.…”

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confidence: 99%

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Comparison of clinical outcomes between limbal relaxing incisions and toric intraocular lenses in eyes with astigmatic corneas

Freitas¹,

Boteon²,

Carvalho³

et al. 2014

Revista Brasileira De Oftalmologia

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Comparison of clinical outcomes between limbal relaxing incisions and toric intraocular lenses in eyes with astigmatic corneas

Freitas¹,

Boteon²,

Carvalho³

et al. 2014

Revista Brasileira De Oftalmologia

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“…The EI exhibited lower values at 1 and 3 months after surgery, although this difference was no longer important by 6 months after surgery. We believed that the EI trend in the LRI group may be related to cicatricial demands associated with this technique (4) ; once the cicatricial process of incisions reached completion, the outcomes in the LRI and toric IOL groups became comparable.…”

Section: Discussionmentioning

confidence: 99%

“…One way to correct astigmatism simultaneously during cataract surgery is to place limbal relaxing incisions (LRIs) (2,3) . It is possible, however, that late corneal biomechanics may play an unfavorable role in refractive outcomes over time (4) . Toric intraocular lens (IOL) implantation is another valuable option for astigmatism correction in cataract patients.…”

Section: Introductionmentioning

confidence: 99%

Treatment of astigmatism during phacoemulsification

Freitas¹,

Boteon²,

Carvalho³

et al. 2014

Arquivos Brasileiros De Oftalmologia

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Purpose: To compare the effectiveness of limbal relaxing incisions (LRI) with that of toric intraocular lens (IOL) implantation for the treatment of astigmatism during phacoemulsification using nonvectorial (predictability, safety, and efficacy) and vectorial analyses. Methods: This longitudinal observational case series assessed 62 eyes of 31 consecutive cataract patients with preoperative corneal astigmatism of 0.75-2.50 diopters (D) in both eyes. Patients were randomly assigned to 2 groups: a toric IOL group, which received toric IOLs in both eyes, and an LRI group, which received spherical IOLs associated with LRI placement in both eyes. All patients were evaluated at 1, 3, and 6 months after surgery, when refractive astigmatism analysis was performed using both nonvectorial and Alpins vectorial methods. Outcomes were assessed within each group and compared between groups. Results: The proportion of eyes within ±0.50 D of the intended correction at 3 and 6 months after surgery was 75% and 71.88%, respectively, in the LRI group and 40% and 66.67%, respectively, in the toric IOL group. In the remaining period, the proportion was greater in the toric IOL group. The safety index showed no difference at any time point. The efficacy index at 1 and 3 months after surgery was significantly higher in the toric IOL group (0.43 and 0.44, respectively) than in the LRI group (0.31 and 0.36, respectively). At 6 months after surgery, the status of eyes in the LRI group was as follows: 53.13% were undercorrected, 43.74% achieved the intended correction, and 3.13% were overcorrected. In the toric IOL group, 16.76% eyes were undercorrected, 76.67% achieved the intended correction, and 6.67% were overcorrected. The success rates for astigmatic surgery, astigmatism reduction at the intended axis, and astigmatism corrected were 43%, 62%, and 64%, respectively, in the LRI group and 57%, 81%, and 94%, respectively, in the toric IOL group. Conclusions: Our results suggest that the use of toric IOLs may be advantageous over the use of LRIs for the treatment of astigmatism during phacoemulsification. Although such advantages seem subtle in nonvectorial analyses, they are highlighted in vectorial analyses.

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“…Such an approach has become the most popular way to manage astigmatism at the time of cataract surgery (12,(31)(32)(33)(34)(35)(36)(37)(38)(39) . The use of LRI offer several advantages over astigmatic incisions placed within the cornea, at smaller optical zones, including less chance of causing a shift in the resultant cylinder axis and a lesser tendency to cause irregular corneal flattening with irregular astigmatism.…”

Section: A) Incisional Approachmentioning

confidence: 99%

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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Evaluation of corneal biomechanical parameters after simultaneous phacoemulsification with intraocular lens implantation and limbal relaxing incisions

Cited by 15 publications

References 24 publications

Comparison of clinical outcomes between limbal relaxing incisions and toric intraocular lenses in eyes with astigmatic corneas

Comparison of clinical outcomes between limbal relaxing incisions and toric intraocular lenses in eyes with astigmatic corneas

Treatment of astigmatism during phacoemulsification

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

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