2324 Dry County towns , the primary visual survey

yxfbbiedtj · Wysłany: Pią 18:14, 25 Mar 2011

2324 Dry County towns ,[link widoczny dla zalogowanych], the primary visual survey

, three small , experimental primary and secondary school for the fourth one . The total number of 2324 subjects who were students in 1858 , 316 high school students , high- , W-k150 people. 1.2 Methods: distance vision table light on the vision chart with the required standards to determine : those with visual inspection by a distance of 5 meters funeral , after the inspection to check the right eye left lf Apricot Burgundy, the first refers to the 1.0 to save time Line , as the occasion, according to investigations by the Society for the frugal or extravagant to identify where appropriate shifts, and four different directions depending on the occasion were visually checked to less than 1.0 L (ie 0.9 and below) system as poor vision . 2 Results and analysis 2.1 Results: The three primary schools and withered investigation of a secondary , 379 primary school students with poor vision , the prevalence jail ( poor eyesight prison ) 20.39o,, 96 middle school students with poor vision , poor vision for the slaughter 30.5 , 72 high school students with poor vision , poor eyesight was , i8o. Survey results show that low vision learning stage 1 increased with the increment , can be seen in the primary visual f Di harm far more than under the myopia of the hazards, is to protect the eyesight of students should not be overlooked , attention should be paid . 2.2 Analysis : ① With the development of market economy , some schools focus only on students in prison and a number of studies have money , any increase in the Jiejia L1 remedial class and enable students to academic burden too heavy , outdoor activities, reduce the time , sleep Lack of time, to encourage students with poor vision . ② students to pay attention to reading and writing habits, do not pay attention _} f1 eye health, the light is too dark to read and write under the eyes and the distance of less than one Shichi book , read and write too long, so that the eyes over the fatigue. ④ majority of primary and secondary fire for a long time watching TV and playing video games hungry , too bright flashing bright screen ,,-jI from the eye muscle fatigue , guided convergence eye I drop. According to the information reported , along with industrial development , air pollution produced dry The amount of organic phosphorus insecticide spraying people can take lead role = r convergence of the eyes decreased vision.