Korean J Ophthalmol.  2004 Dec;18(2):116-120. 10.3341/kjo.2004.18.2.116.

Pseudophakic Residual Astigmatism

• Bae JG
• Kim SJ
• Choi YI

• KMID: 754376
• DOI: http://doi.org/10.3341/kjo.2004.18.2.116

Abstract

We investigated pseudophakic residual astigmatism in order to minimize postoperative refractive astigmatism. We examined 110 eyes of 87 patients who had undergone phacoemulsification with small incision and posterior chamber intraocular lens (IOL) implantation. Corneal astigmatism was measured using an autokeratometer (RK-5, canon), refractive astigmatism by manifest refraction, and residual astigmatism by vector analysis. Mean pseudophakic residual astigmatism was +0.47 X 176degrees, predominantly against-the-rule. Variations of pseudophakic residual astigmatism according to sex, age and IOL type were not statistically significant. When performing cataract surgery as refractive surgery, we may consider that pseudophakic residual astigmatism is approximately 0.50D against-the-rule.

Keyword

refractive cataract surgery; pseudophakic residual astigmatism; corneal astigmatism; refractive astigmatism; against-the-rule

MeSH Terms

Adult
Aged
Aged, 80 and over
Astigmatism/diagnosis/*etiology
Comparative Study
Female
Humans
*Lens Implantation, Intraocular
Lenses, Intraocular
Male
Middle Aged
*Phacoemulsification
*Postoperative Complications
Postoperative Period
Pseudophakia/diagnosis/*etiology
Refraction, Ocular
Retrospective Studies

Figure

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  Fig. 1 Power distribution of preoperative corneal astigmatism and pseudophakic residual astigmatism.

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  Fig. 2 Axis distribution of preoperative corneal astigmatism and pseudophakic residual astigmatism. ATR: against-the-rule astigmatism. WTR: with-the-rule astigmatism. OBL: oblique astigmatism.

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  Fig. 3 Linear regression: Pseudophakic refractive astigmatism and corneal astigmatism.

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