Shahroud Eye Cohort Study
Shahroud University of Medical Sciences
Tehran University of Medical Sciences
Principal Investigator:Hassan Hashemi
-Professor of Ophthalmology
-Tehran University of Medical Sciences-Noor Ophthalmology Research Center
Approval date
2009
Starting date
2009
Goals
To identify the causes of eye diseases and visual impairments in middle aged peoples.
Study population
40 to 64 year old peoples in Shahroud city
Sampling method and sample size
Population based multistage cluster sampling 5190
Data Collection
In a population of about 28000 people aged 40 to 64 in Shahroud city, north of Iran, 6,311 people selected randomly. In the first phase of this project, 82.2% of those invited participate in examinations and eye problems of 5190 people were identified. The 2nd phase of study performed in 2014 and 4737 individuals (91.3%) were participated.
Follow up Methods
Every five year with annual contact and free optometric examination, Gift, SMS, call contact and contacts at homes.
Main Exposures
Demographic, job, drugs, systemic diseases, familial and genetic factors
Outcomes
Visual impairments, ophthalmic and optometric diseases in lids, cornea, lens, retina and …
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