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       XXVIII Annual Congress of the Iranian Society of Ophthalmology        بـیــست و هشتمین کنــگــره سـالیـانه انـجـمـن چـشـم پـزشـکی ایـــران
مقاله Abstract


Title: Correlation of higher order aberrations and components of astigmatism in myopic refractive surgery candidates
Author(s): Mohammadpour M, Heidari Z, Mohammad-Rabei H, Jafarzadehpur E, Jabbarvand M, Hashemi H, Khabazkhoob M
Presentation Type: Poster
Subject: Cornea and Anterior Segment
Others:
Presenting Author:
Name: Zahra Heidari
Affiliation :(optional) 1-Noor Ophthalmology Research Center, Noor Eye Hospital, Tehran; 2-Ophthalmology Department, Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran.
E mail: zahra.heidari77@yahoo.com
Phone: 02182401616
Mobile: 09125266018
Purpose:

To evaluate the correlation between refractive, corneal, and residual astigmatism and higher order aberrations (HOA) in refractive surgery candidates.

Methods:

Three hundred and seventy-five eyes of 188 patients aged 28.2 ± 6.24 years with a predominance of females (62.7%) were enrolled in this study. Refraction, topography (Orbscan IIz, Bausch & Lomb, Rochester, NY, USA), and aberrometry (Zywave, Bausch & Lomb, Rochester, NY, USA) were performed to determine refractive and corneal astigmatism and HOA for all participants. Ocular residual astigmatism was calculated using vector analysis.

Results:

The mean spherical equivalent was -3.59 ± 1.95 D and the mean refractive astigmatism was -1.97 ± 1.3 D. The mean HOA was 0.38 ± 0.15 ?m in all cases, which increased with spherical equivalent (p < 0.05). There was a positive significant correlation between both corneal and refractive astigmatism and HOA (p < 0.05), but there was no significant correlation between residual astigmatism and HOA (p = 0.122).

Conclusion:

The results of the study showed significant correlations between corneal and refractive astigmatisms and HOA.

Attachment: 6Z.poster.ppt





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