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Japanese Journal of Ophthalmology
Published in: Japanese Journal of Ophthalmology 4/2015

01-07-2015 | Clinical Investigation

Clinical utility of femtosecond laser-assisted astigmatic keratotomy after cataract surgery

Authors: Ryohei Nejima, Yukiko Terada, Yosai Mori, Miyuki Ogata, Keiichiro Minami, Kazunori Miyata

Published in: Japanese Journal of Ophthalmology | Issue 4/2015

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Abstract

Purpose

To examine the clinical utility of femtosecond laser-assisted astigmatic keratotomy (FSL-AK) for eyes after cataract surgery.

Methods

Eight eyes of 6 patients with an intraocular lens and corneal astigmatism of 2.0 diopters (D) or more underwent FSL-AK. The mean preoperative manifest cylindrical refraction was 2.88 ± 0.64 D and the mean corneal astigmatism was 2.84 ± 0.83 D. Paired symmetrical arcuate incisions were created with the same settings, except for the incision depth. Uncorrected distance visual acuity (UDVA), manifest cylindrical power, and surgically induced astigmatism (SIA) were measured at 1 day, 1 week, and 1 month postoperatively. Fourier analysis of corneal topography and incision depths measured with anterior-segment optical coherence tomography were evaluated 1 month postoperatively.

Results

In all eyes, the UDVA improved at 1 week and 1 month postoperatively, and the manifest cylinder also decreased postoperatively, while the SIA showed overcorrections in 6 eyes. Fourier analysis showed decreases in spherical and regular astigmatic components and increases in higher-order irregularity. The mean incision depth was measured as 60 µm deeper than the intended depth.

Conclusion

The FSL-AK effectively reduced corneal astigmatism and improved the UDVA, although it was demonstrated that the deeper incisions led to overcorrection.
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Metadata
Title
Clinical utility of femtosecond laser-assisted astigmatic keratotomy after cataract surgery
Authors
Ryohei Nejima
Yukiko Terada
Yosai Mori
Miyuki Ogata
Keiichiro Minami
Kazunori Miyata
Publication date
01-07-2015
Publisher
Springer Japan
Published in
Japanese Journal of Ophthalmology / Issue 4/2015
Print ISSN: 0021-5155
Electronic ISSN: 1613-2246
DOI
https://doi.org/10.1007/s10384-015-0383-3

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