Ocular Aberrations Changes after Implantable Collamer Lens Implantation for High Myopic Astigmatism

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HASHEMIAN S.J.; FARROKHI H.; FOROUTAN A.; JAFARI M.E.; HASHEMIAN M.; HASHEMIAN M.; ALEMZADEH A.

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Journal: BINA Year:2018 | Volume:23 | Issue:4 Page(s): 254-261

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Title

Ocular Aberrations Changes after Implantable Collamer Lens Implantation for High Myopic Astigmatism

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Keywords

Higher Order AberrationsQ3

Implantable Collmer LensQ3

Myopic AstigmatismQ3

Phakic IOLQ3

Abstract

Purpose: To investigate the changes in aberrations induced by implantation of Implantable Collamer Lenses (ICL and Toric ICL; STAAR Surgical, Nidau, Switzerland) in eyes with high myopia. and high myopic astigmatism Methods: We investigated thirty-three eyes of 18 consecutive patients, with spherical equivalent errors of-6. 00 to-21. 09 diopters (D) and cylindrical errors of-0. 5 to-4. 75 D, who underwent ICL and toric ICL implantation. Before and 5 days, 2 and 6 months after surgery, the uncorrected visual acuity (UCVA), best spectacle-corrected visual acuity (BSCVA), defocus and adverse events of the surgery were assessed. Ocular higher order aberrations also were evaluated by Hartmann-Shack aberrometry ((Technolas PV, Rochester, New York, USA) before and 6 months after surgery. Results: 6. 0 month after surgery, the uncorrected and best corrected visual acuity respectively in 40% and 66. 7% of eyes were 20/20. Six month post-operation, mean defocus refraction and astigmatism reduced to-0. 66 and 0. 65 D from-12. 79 and 2. 18 at baseline respectively. For a 6-mm pupil, higher order aberrations were not significantly changed, merely from 0. 417± 0. 162􀀀 before surgery to 0. 393± 0. 119􀀀 after surgery (P = 0. 45). Spherical aberration (Z400) increased significantly (P= 0. 00). Surgical induced astigmatism was lower than 0. 25 D and there were no changes in trefoils and coma aberration. No vision-threatening complications occurred during the observation period. Conclusion: This study shows, the ICL and toric ICL performed well in correcting high myopic astigmatism without significant changes in HOAs during a 6. 0 months observation period, although the spherical aberration (Z400) increased significantly.

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APA: Copy

HASHEMIAN, S.J., FARROKHI, H., FOROUTAN, A., JAFARI, M.E., HASHEMIAN, M., HASHEMIAN, M., & ALEMZADEH, A.. (2018). Ocular Aberrations Changes after Implantable Collamer Lens Implantation for High Myopic Astigmatism. BINA, 23(4 ), 254-261. SID. https://sid.ir/paper/42550/en

Vancouver: Copy

HASHEMIAN S.J., FARROKHI H., FOROUTAN A., JAFARI M.E., HASHEMIAN M., HASHEMIAN M., ALEMZADEH A.. Ocular Aberrations Changes after Implantable Collamer Lens Implantation for High Myopic Astigmatism. BINA[Internet]. 2018;23(4 ):254-261. Available from: https://sid.ir/paper/42550/en

IEEE: Copy

S.J. HASHEMIAN, H. FARROKHI, A. FOROUTAN, M.E. JAFARI, M. HASHEMIAN, M. HASHEMIAN, and A. ALEMZADEH, “Ocular Aberrations Changes after Implantable Collamer Lens Implantation for High Myopic Astigmatism,” BINA, vol. 23, no. 4 , pp. 254–261, 2018, [Online]. Available: https://sid.ir/paper/42550/en

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