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ORIGINAL ARTICLE
Year : 2013  |  Volume : 3  |  Issue : 3  |  Page : 95-97

Myopic shift of sulcus suture-fixated posterior chamber intraocular lenses


Department of Ophthalmology, Changhua Christian Hospital, Changhua, Taiwan

Correspondence Address:
Chang-Ping Lin
Department of Ophthalmology, Changhua Christian Hospital, Number 135, Nan-Hsiao Street, Changhua City 500
Taiwan
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Source of Support: None, Conflict of Interest: None


DOI: 10.1016/j.tjo.2013.06.001

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Purpose: The objective of this study is to evaluate the myopic shift in sulcus suture-fixated posterior chamber intraocular lenses (PC IOLs). Methods: It was a retrospective study of patients diagnosed with lens subluxation or aphakia who received sulcus suture-fixated PC IOLs from 2004 to 2010. Preoperative visual acuity; axial length; predicted IOL power by the SRK-T, Hoffer-Q, and Holladay-1 formulas; predicted refraction; postoperative visual acuity; and postoperative refraction were recorded. Differences between postoperative refraction and predicted refraction for an in-the-bag lens were calculated for each patient. Results: Twenty eyes from 16patients with sulcus suture-fixated PC IOLs were included inthe study. Another 18 eyes from 18 patientswithin-the-bag fixationofIOLwereassigned tothe controlgroup. Inastudygroup, the difference between postoperative spherical equivalent and predicted refraction was −1.66 ± 0.97 D. The simple linear regression suggests that the SRK-T formula provides a better calculation of IOL power than other formulas for sulcus suture fixation of PC IOL using our technique. A comparison of postoperative refraction shifts between the study and the control groups showed that the myopic shift was statistically significant in the study group (p < 0.001). Conclusion: Sulcus suture-fixation of a PC IOL induces, on average, a 1.66 D myopic shift, which is equivalent to an IOL power of around 2 D. In order to prevent a postoperative hyperopia refraction, we suggest that IOL power should be reduced to 1 –1.5 D for performing sulcus fixation using our technique.


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