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Femtosecond laser-assisted astigmatic keratotomy to correct residual astigmatism after cataract surgery

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Session Details

Session Title: Presented Poster Session: Femtolaser Refractive Applications

Session Date/Time: Saturday 05/09/2015 | 09:30-11:00

Paper Time: 10:30

Venue: Poster Village: Pod 2

First Author: : H.Jeong SOUTH KOREA

Co Author(s): :    H. Tchah   A. Yoo   J. Kim   M. Kim     

Abstract Details

Purpose:

To assess the safety and efficacy of femtosecond laser-assisted astigmatic keratotomy to correct residual astigmatism after cataract surgery.

Setting:

Asan Medical Center, Seoul, Republic of Korea.

Methods:

Forty eyes that had residual astigmatism between =1.0 diopters (D) and <3.0 D after cataract surgery underwent astigmatic keratotomy using femtosecond laser, IntraLase® (60Khz). Paired symmetrical arcuate keratotomies was made from the surface to 80% depth at 9 mm diameter. The mean follow-up was 4.9 ± 1.9 months. Outcome measures were uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), manifest refraction, topographic astigmatism, and specular microscopy.

Results:

The mean UDVA improved significantly from 0.32 ± 0.14 to 0.18 ± 0.12 logarithm of the minimum angle of resolution (P < 0.05). The mean absolute astigmatism decreased significantly from 1.61 ± 0.47 D preoperatively to 0.91 ± 0.40 D postoperatively (P < 0.05). The defocus equivalent was significantly reduced by more than 0.7 D (P < 0.05). There was no statistically significant difference in the preoperative and postoperative spherical equivalent, CDVA, and HOAs. No intraoperative or postoperative adverse events were found during the follow-up period.

Conclusions:

Femtosecond laser-assisted astigmatic keratotomy was effective at reducing refractive error in patients with residual astigmatism after cataract surgery. Predictability could be improved with nomogram adjustment.

Financial Interest:

One of the authors receives non-monetary benefits from a company producing, developing or supplying the product or procedure presented.

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