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P. J. Buckhurst, J. S. Wolffsohn, S. A. Naroo, L. N. Davies; Stability of the Akreos Toric Intraocular Lens. Invest. Ophthalmol. Vis. Sci. 2010;51(13):5746.
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To determine the rotational and centrational stability of the Akreos toric intraocular lens (IOL) over a 1-month period post implantation.
Fifty-four subjects, across six sites in Europe, were implanted with the Akreos toric IOL. At 1day subjects were dilated and imaged using a CSO SL-990 digital slit-lamp biomicroscope at 1 week and 1 month post-operatively. The IOL was retroilluminated and external illumination applied to highlight conjunctival blood vessels and iris features. Rotation was determined by comparing the angle of the orientation marks on the IOL with two pairs of conjunctival vessels or iris features, consistent between sequential visits. For centration the difference between the centre of ovals circumscribing the IOL optic and the limbus was quantified.
98% of IOLs stayed within 5° of the day 1 position at 1 week and 1 month, 100% of lenses remained within 10°. Mean rotation was 1.27±1.22° at 1-week and 1.41±1.50° at 1-month. There was no bias in direction of the IOL movement. No IOL was decentred more than 0.7mm at any visit. Decentration at day 1 was 0.30±0.13mm, at 1 week 0.31±0.16mm and at 1 month 0.34±0.20mm.
The Akreos toric IOL shows rotational and centration stability over the first month after implantation.
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