The influence of corneal wound size on surgically induced corneal astigmatism after phacoemulsification

Wei, Yi‐Hsuan; Chen, Wei-Li; Su, Pei-Yuang; Shen, Edward; Hu, Fung-Rong

doi:10.1016/j.jfma.2011.03.002

Cited by 22 publications

(15 citation statements)

References 24 publications

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“…Factors that are important in recovery of clear, stable vision post‐cataract surgery include resolution of corneal oedema, intraocular inflammation, and stabilisation of corneal astigmatism . With modern techniques of phacoemulsification and foldable IOLs becoming the current standard of care in the Australian health care setting, incision sizes have become smaller, and with smaller incisions comes less induced astigmatism that may take less time to stabilise …”

Section: Discussionmentioning

confidence: 99%

“…Foldable intraocular lenses (IOLs) and phacoemulsification permit increasingly smaller incisions, shorter operative times and decreased disruption to surrounding structures. It has been demonstrated that smaller incisions lead to faster refractive stability following IOL insertion and induce less corneal astigmatism, reducing stabilisation time and improving the clarity of uncorrected vision …”

mentioning

confidence: 99%

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Refractive stability following uncomplicated cataract surgery

McNamara

Hutchinson

Thornell³

et al. 2019

Clinical and Experimental Optometry

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Background: Quality of life may be negatively impacted following cataract surgery if glasses prescription is delayed. This study aims to confirm the refractive stabilisation time in an Australian population to form the basis for suggesting an appropriate timeframe for spectacle prescription. Methods: Participants (51 female and 35 male) were recruited one day after uncomplicated unilateral cataract surgery using a monofocal intraocular lens. Subjective refraction, automated refraction and central corneal thickness were measured at two, four and six weeks post-operatively. A short questionnaire assessing the impact of uncorrected near vision on daily activities was collected at two and four weeks. Results: There was no significant change in the mean automated or subjective spherical equivalent refraction (p eq < 0.001), mean corneal thickness (p eq < 0.001), mean uncorrected distance visual acuity (p eq < 0.001) or mean uncorrected near visual acuity (p eq < 0.001) over the six-week study period. At week two, 59 per cent of patients stated that their uncorrected near vision affected their ability to perform daily tasks 'somewhat' or 'a lot', increasing to 75 per cent by week four. Conclusion: Uncorrected near vision affected quality of life for most participants. All measured visual and ocular parameters were stable from two weeks post-operatively. Patients need not wait longer than this for spectacle prescription following uncomplicated unilateral cataract surgery.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Refractive stability following uncomplicated cataract surgery

McNamara

Hutchinson

Thornell³

et al. 2019

Clinical and Experimental Optometry

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“…[1011121314] Although, an astigmatic axis shift is affected by the size, location, and shape of the incision, it was reported that the incision size has a major impact on SIA. [15] The appropriate size for a self-sealing corneal incision is 3.0-3.5 mm,[16] and the allowable limit of the keratometric shift for refraction and visual rehabilitation is approximately 0.50 D.[1213] This can be achieved with a 3.0 mm incision.…”

Section: Discussionmentioning

confidence: 99%

Surgically induced astigmatism after 3.0 mm temporal and nasal clear corneal incisions in bilateral cataract surgery

Yoon

Kim

Lee

et al. 2013

Indian J Ophthalmol

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Aims:To compare the corneal refractive changes induced after 3.0 mm temporal and nasal corneal incisions in bilateral cataract surgery.Materials and Methods:This prospective study comprised a consecutive case series of 60 eyes from 30 patients with bilateral phacoemulsification that were implanted with a 6.0 mm foldable intraocular lens through a 3.0 mm horizontal clear corneal incision (temporal in the right eyes, nasal in the left eyes). The outcome measures were surgically induced astigmatism (SIA) and uncorrected visual acuity (UCVA) 1 and 3 months, post-operatively.Results:At 1 month, the mean SIA was 0.81 diopter (D) for the temporal incisions and 0.92 D for nasal incisions (P = 0.139). At 3 months, the mean SIA were 0.53 D for temporal incisions and 0.62 D for nasal incisions (P = 0.309). The UCVA was similar in the 2 incision groups before surgery, and at 1 and 3 months post-operatively.Conclusion:After bilateral cataract surgery using 3.0 mm temporal and nasal horizontal corneal incisions, the induced corneal astigmatic change was similar in both incision groups. Especially in Asian eyes, both temporal and nasal incisions (3.0 mm or less) would be favorable for astigmatism-neutral cataract surgery.

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“…Several studies have demonstrated that minimising the incision size may decrease SIA and improve wound strength and integrity [3,4].…”

Section: Introductionmentioning

confidence: 99%

Topography changes and endothelial cell loss after temporal 1.8 mm coaxial microincision cataract surgery (MICS)

Mallias¹,

Tasiopoulou²

2016

Ophthalmology J

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INTRODUCTION. The purpose of this paper was to determine surgically-induced changes both in corneal topographic parameters and in endothelial cell loss after coaxial microincision cataract surgery (MICS) through temporal 1.8 mm incision. MATERIALS AND METHODS. Evaluation was performed in forty eyes of thirty patients who underwent cataract surgery. Topographic parameters including corneal astigmatism, surface regularity index (SRI), and surface asymmetry index (SAI) were estimated preoperatively and at one week, four weeks, and eight weeks after surgery. A specular microscope was also used for the measurement of the corneal endothelial density (cells/mm

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The influence of corneal wound size on surgically induced corneal astigmatism after phacoemulsification

Abstract: Mean SIA in the 3.5 mm group was larger than that in the 2.5 mm group in the early postoperative period, but there was no significant difference for the entire observational period.

Cited by 22 publications

References 24 publications

Refractive stability following uncomplicated cataract surgery

Refractive stability following uncomplicated cataract surgery

Surgically induced astigmatism after 3.0 mm temporal and nasal clear corneal incisions in bilateral cataract surgery

Topography changes and endothelial cell loss after temporal 1.8 mm coaxial microincision cataract surgery (MICS)

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