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Manual arcuate keratotomy after trifocal IOL
First Author: A. Ruiz Rizaldos SPAIN
Co Author(s): J. Ortega-Usobiaga J. Beltrán V. Druchkiv M. Fernández-Berger
To assess visual outcomes after treatment of residual refraction in patients with a multifocal intraocular lens implanted using manual arcuate keratotomy (AK) or laser vision correction (laser in situ keratomileusis [LASIK] or photorefractive keratectomy [PRK]).
Cl�nica Baviera, AIER Hospital Group. Spain
This retrospective clinical study was based on 1884 eyes with low mixed astigmatism after implantation of a multifocal intraocular lens (IOL) in both eyes. Previous treatment was with refractive lens exchange or cataract surgery (509 patients were treated with excimer laser [bioptics group] and 866 patients with manual AK). Outcome measures included preoperative and postoperative uncorrected distance acuity (UDVA), corrected distance visual acuity (CDVA), and subjective patient visual satisfaction.
Mean UDVA, improved from logMAR 0.2 � 0.08 to 0.05 � 0.04 in the bioptics group and from 0.17 � 0.08 to 0.06 � 0.05 in the AK group. Differences before and after surgery in the bioptics and AK groups were as follows: mean absolute subjective cylinder, decrease from �1.24 � 0.38 diopters (D) to �0.22 � 0.23 D and from �1.09 � 0.28 D to �0.39 � 0.3 D (p < 0.01); mean CDVA 0.04 � 0.04 to 0.03 � 0.04 and 0.04 � 0.03 to 0.04 � 0.04 R (p = 0.137). No statistically signi?cant differences were recorded.
Manual AK was effective and safe at reducing refractive error in patients with residual astigmatism after implantation of a multifocal IOL. Visual outcome and subjective satisfaction were comparable to those of laser vision correction.
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