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:: جلد 25، شماره 2 - ( مجله چشم پزشکي ايران 1392 ) ::
جلد 25 شماره 2 صفحات 145-150 برگشت به فهرست نسخه ها
Measurement of Cyclotorsional Displacement Using Iris Registration among Refractive Surgery Candidates with High Astigmatism
دکتر مهرداد محمدپور، دکتر حسن هاشمی، دکتر محمود جباروند، دکتر مریم حسن زاد*، دکتر فاطمه السادات ثابت، دکتر مهرناز فلاح تفتی، دکتر بهناز مهدویانی
، mar_hassanzad@yahoo.com
چکیده:   (10836 مشاهده)

Purpose : To determine cyclotorsional eye movement between the upright position and the supine position, in Iranian patients with high preoperative astigmatism

Methods : This prospective cross sectional study contains 102 eyes of 59 patients who were candidates for refractive surgery with Technolas 217z100 excimer laser system for correction of high astigmatism. Wavefront measurements using Zywave II, Hartmann Shack aberrometer were performed in seated position. For all patients the amount of cyclotorsion before surgical procedure in supine position was measured by iris registration and the comparison between preoperative examinations in seated position with the supine position resulting in the amount of cyclotorsion was conducted by iris registration.

Results : The mean cyclotorsion was found 3.18±2.37 (SD) degrees significantly greater than zero degrees (3.28±2.28 (SD) degrees in excyclotorsion and 3.01±2.54 (SD) degrees in incyclotorsion). Excyclotorsion was predominant trend of rotation in comparison with incyclotorsion in both right and left eyes. The amount of rotation greater than 2, 5 and 7 degrees occurred in 59.8%, 21.6% and 5.9% of the eyes, respectively.

Conclusion : This study confirms significant rotational movement between the upright position and the supine position. Proper registration for appropriate correction of astigmatism and higher order aberrations (HAOs) for achieving optimal visual outcomes is recommended.

 

Iranian Journal of Ophthalmology 201325(2):145-150 © 2013 by the Iranian Society of Ophthalmology

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نوع مطالعه: پژوهشی | موضوع مقاله: سگمان قدامی
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Mohammadpour M, Hashemi H, Jabbarvand M, Hassanzad M, Sabet F A, Fallah Tafti M et al . Measurement of Cyclotorsional Displacement Using Iris Registration among Refractive Surgery Candidates with High Astigmatism. Iranian Journal of Ophthalmology. 2013; 25 (2) :145-150
URL: http://irjo.org/article-1-817-fa.html

محمدپور مهرداد، هاشمی حسن، جباروند محمود، حسن زاد مریم، ثابت فاطمه السادات، فلاح تفتی مهرناز و همکاران.. Measurement of Cyclotorsional Displacement Using Iris Registration among Refractive Surgery Candidates with High Astigmatism. مجله چشم پزشکی ایران. 1392; 25 (2) :145-150

URL: http://irjo.org/article-1-817-fa.html



جلد 25، شماره 2 - ( مجله چشم پزشکي ايران 1392 ) برگشت به فهرست نسخه ها
مجله چشم پزشکی ایران Iranian Journal of Ophthalmology
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