This study aims to assess the rotational stability of the new collameric Nanoflex toric intraocular lens (T-IOL) by STAAR inserted in astigmatic patients after cataract surgery. The purpose of this study is also to determine whether the use of a toric intraocular lens (T-IOL) improves visual acuity.
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Change in rotational stability of the toric intraocular lens (T-IOL).
Timeframe: Change of rotational stability at 1 day, 1 week, 1 month, 3 months, 6 months, 12 months and 18 months after surgery.