Our objectives in this study are to determine the 
prevalence of visual acuity disorders and to identify the important 
risk factors that associated with visual acuity disorders among 
Intermediate school students in Riyadh, 2012.Design.a cross 
sectional study was preformed the prevalence of visual acuity has 
been measured in Riyadh schools district. A sample size of 580 
students throw a Multi-stage random sampling technic was 
conducted. The tools that have been used to collect data in this 
study are self administered questioner and the Snellen chart 
through placing it on 6 meter distance from the student, it contains 
C-letter-like shapes in different direction and sizes, which should 
be identified by the student.  
Study Sample: All Male intermediate school students in 
governmental schools in Riyadh city, 2012. Which included a 
total of 580 students?  
Results: The prevalence of visual acuity impairment in our study 
was 14.3%, with a mean age of 14.14 ± 5.497 years old.  44.58 % 
of the students who are visually impaired didn't wear glasses. 
Mean hours spent on watching TV of visually impaired students is 
4.02± 2.437 and mean hours spent on reading 1.76 ± 1.061. Mean 
number of students who feel tired after time watching TV is 
15.70%. There is increase in visual impairment among students as 
age increased. We observed that 60% of visually impaired 
students don't follow up with ophthalmologists.  
Conclusion: We found that there is a significant relationship 
between visual acuity impairment and inheritance. Also one of the 
risk factors among students who suffer from visual acuity 
impairment is that they don't regularly follow up with an 
ophthalmologist, and 44.58 % of the students who are visually 
impaired didn't wear glasses.