Original Article

Correspondence: Medi Eslani, MD, 255 Northern Jamalzadeh St, Research Department, Basir Eye Center, Tehran, Iran. Tel/Fax: 98 21 6650 5185 or 98 912 3438 840; E-mail:

Behzad Elahi, MD

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, and

Farsad Noorizadeh, MD

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Journal of Refractive Surgery, 2009;25(12):1075–1082

Published Online:November 17, 2009https://doi.org/10.3928/1081597X-20091117-06Cited by:7

Abstract

Purpose:

To evaluate visual outcomes of LASIK in eyes with high astigmatic refractive errors with low spherical component.

Methods:

We prospectively evaluated cross cylinder LASIK in patients with high astigmatic eyes with low spherical component over a 2-year period. All laser surgeries were performed with the NIDEK EC-5000 excimer laser. We used power vectors (M [spherical equivalent] and J_0, and J₄₅ [cylinder]) to analyze the astigmatic results. Main outcome measures were uncorrected visual acuity (UCVA), best spectacle-corrected visual acuity (BSCVA), manifest refraction, and complications.

Results:

Thirty-four eyes of 22 patients were included. Patients were followed for 21.8±3.7 months. At the last examination, UCVA of 20/40 or better was observed in 33 (97.1%) eyes. Best spectacle-corrected visual acuity after LASIK improved significantly in comparison to BSCVA before surgery (P<.005). Mean preoperative cylinder was −4.73±0.89 diopters (D) (range: −4.00 to −7.00 D), which decreased to −0.29±0.47 D (range: 0.00 to −1.50 D) at last follow-up (P<.001). Reduction in the magnitude of power vectors was 92.4% for M, 103.2% for J₀, and 76.4% for J₄₅. No cases of postoperative astigmatic regression or corneal haze were observed.

Conclusions:

Cross cylinder LASIK with the NIDEK EC-5000 excimer laser is a successful procedure for correcting high astigmatism and improving vision.

[J Refract Surg. 2009;25:1075–1082.]

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Correspondence: Medi Eslani, MD, 255 Northern Jamalzadeh St, Research Department, Basir Eye Center, Tehran, Iran. Tel/Fax: 98 21 6650 5185 or 98 912 3438 840; E-mail: dr.eslani@gmail.com

From Basir Eye Center (Abolhassani, Shojaei), Baghiatolah University of Medical Sciences (Shojaei), Labbafinejad Medical Center, Shahid Beheshti University (MC) (Baradaran-Rafiee), and School of Medicine, Medical Sciences/University of Tehran (Eslani, Noorizadeh), Tehran, Iran; and the Department of Neurology, Institute of Medical Sciences, University of Toronto, Toronto, Canada (Elahi).

The authors have no financial interest in the materials presented herein.

Presented in part at the XXV Congress of European Society of Cataract and Refractive Surgery; September 8-12, 2007; Stockholm, Sweden.

Received6/18/08
Accepted12/12/08
Published online11/17/09

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Vector Analysis of Cross Cylinder LASIK With the NIDEK EC-5000 Excimer Laser for High Astigmatism

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Vector Analysis of Cross Cylinder LASIK With the NIDEK EC-5000 Excimer Laser for High Astigmatism

Abstract

Purpose:

Methods:

Results:

Conclusions:

Information

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OPPORTUNITIES

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