image 2 image 4
Skip Navigation Links
 Home 
 Congress Structure 
 Important Dates 
 Venue 
 Registration 
 Pre Registered 
 Hotel Info 
 Abstracts 
 Scientific Program 
 Exhibition 
 Contact Us 
 Personal page 
 Photo and Film Festival 
       XXVI Annual Congress of the Iranian Society of Ophthalmology        بـیــست و ششمین کنــگــره سـالیـانه انـجـمـن چـشـم پـزشـکی ایـــران
مقاله Abstract


Title: Five Year Change in Refraction and its Ocular Components in the 40-64 Year Old Population of the Shahroud Eye Cohort Study
Author(s): Hashemi H, Khabazkhoob M, Emamian MH, Fotouhi A
Presentation Type: Oral
Subject: Cornea and Anterior Segment
Others:
Presenting Author:
Name: Hassan Hashemi
Affiliation :(optional) Noor Research Center for Ophthalmic Epidemiology, Noor Eye Hospital, Tehran, Iran
E mail: info@irsocongress.org
Phone: 0
Mobile: 09121127421
Purpose:

To assess five-year refractive changes and their related factors in the 40-64 year old population of Shahroud, Iran

Methods:

Of the 5190 participants of Phase I 4737 participated in Phase II (response rate =91.3%. Participants were tested by refraction, visual acuity, slit-lamp biomicroscopy, ophthalmoscopy, and biometry. Myopia was defined as a spherical equivalent more negative than -0.5 diopters, and hyperopia as a spherical equivalent more positive than +0.5 diopters.

Results:

The mean 5-year change in spherical equivalent refraction was +0.24D (95% CI: +0.22 to +0.25). After 5 years, 4.77% (95% CI: 4.08 to 5.46) of subjects developed at least 0.5D of myopia, and 22.27% (95% CI: 20.97 to 23.57) developed at least 0.5D of hyperopia. Five-year changes in refraction included an hyperopic shift in all age groups. The greatest hyperopic shift was seen in middle aged women. The greatest loss of lens power was observed in hyperopic women, and the least in myopic men. Nuclear cataract was associated with a myopic shift in refraction. The axial length and the corneal power had very small changes during this period. Myopes showed the greatest increase in axial length. Corneal power increased by a very small amount in all refractive groups

Conclusion:

The most important biometric index related to hyperopic shifts, which were greater in magnitude in women, was loss of lens power, whereas nuclear cataract was associated with myopic shifts

Attachment:





Skip Navigation Links
        صفحه اصلی
        ساختار کنگره
        تاریخ های مهم
        مکان برگزاری
        ثبت نام
        ثبت نام شدگان
        اطلاعات هتل - رزرو
        مقالات
        برنامه کنگره
        جشنواره فیلم و عکس
        نمایشگاه
        تماس با ما
        صفحه شخصی
        جستجوی سخنران
        آرشیو کنگره سالهای گذشته
 
ورود شرکت کنندگان
نام کاربری :
کلمه عبور :
  کلمه عبور خود را فراموش کرده ام.
Total Visits
Find us on Social Media
Congress Count Down
Today Label
Last Month Label
Total Visitors Label