Influence of ocular features and incision width on surgically induced astigmatism after cataract surgery

Journal of Refractive Surgery
Shu-Wen ChangYao-Lin Chen

Abstract

To identify factors associated with surgically induced astigmatism (SIA) following phacoemulsification. Six hundred five eyes underwent phacoemulsification with a 2.2-mm (the 2.2-mm group, n = 248) or 2.75-mm (the 2.75-mm group, n = 357) superior limbal incision. Preoperative axial length, anterior chamber depth, corneal curvature, and intra-ocular pressure were measured. Corneal curvature and intraocular pressure were measured at 1 day, 1 week, and 1, 2, and 3 months postoperatively. SIA, corneal flattening, and torque were calculated using the Alpins method. The effect of preoperative corneal astigmatism meridian on SIA was also examined. Differences in SIA between the 2.2- and 2.75-mm groups were explored, and correlations between SIA and preoperative corneal astigmatism, anterior chamber depth, axial length, age, and intraocular pressure were analyzed. SIA, corneal flattening, and torque were smaller in the 2.2-mm group than in the 2.75-mm group at 1 week (P = .003, .006, and .014, respectively), but not statistically different thereafter. Higher preoperative corneal astigmatism, older age, and shallower anterior chamber depth were associated with greater SIA in both groups. The effect of astigmatism meridian on SIA was mor...Continue Reading

References

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Mar 17, 2012·Ophthalmic Surgery, Lasers & Imaging : the Official Journal of the International Society for Imaging in the Eye·Preeya K GuptaTerry Kim
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Jun 19, 2012·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Tsz-Wing LeungChea-Su Kee
Aug 28, 2012·Journal of Cataract and Refractive Surgery·Gian Maria CavalliniElisa Fornasari
Nov 1, 2012·European Journal of Ophthalmology·Matthias K J KlamannEckart Bertelmann
Jun 13, 2013·Journal of Cataract and Refractive Surgery·Alexandre DenoyerChristophe Baudouin

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Citations

Apr 14, 2017·Journal of Refractive Surgery·Dan Z ReinsteinJ Bradley Randleman
Jul 6, 2018·European Journal of Ophthalmology·Joaquín FernándezDavid P Piñero
Nov 17, 2015·Current Opinion in Ophthalmology·Praneetha ThulasiJ Bradley Randleman
May 24, 2017·Journal of Cataract and Refractive Surgery·Dan Z ReinsteinJ Bradley Randleman

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