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Abnormal Visual Acuity Screening Among Secondary Pupils in Owerri Urban

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dc.contributor.author Obi, Pascal Chigozie
dc.date.accessioned 2017-06-06T10:13:30Z
dc.date.available 2017-06-06T10:13:30Z
dc.date.issued 2017-06-06
dc.identifier.uri http://hdl.handle.net/123456789/5303
dc.description.abstract A cross sectional descriptive study of visual acuity if post-primary school children in one urban and one rural communities in Owerri were undertaken. A total of 318 children were randomly selected using a multistage sampling procedure. Out of this number, 170 were males while 200 were females representing 45% and 33% respectively of the study group. The result of the study shows that about 21.4% post-primary school pupils have various degrees of subnormal visual acuity. Two thirds of these (14% of the total) have mild defects. There is a significant sex variation in prevalence, the female being more affected than the male (14%; 74%). There appears to be a relationship to height, tall pupils having a higher prevalence than short ones. Similarly, pupils who spend more time in close works has a higher prevalence that those who do not (14.7% and 100%) of those who read between 1 hour to 2 hours and 4 hours to 5 hours respectively. There is a significant hereditary influence on the incidence of subnormal vision (7.4% and 26.2% of those with negative and positive family history respectively). Eye defect is statistically dependent on family history P = 0.05. Finally the population studied presented no data on the age at which myopia commences, but earlier investigations have shown that only a minority are myopic before school age (6 years). After this age, the frequency of myopia increases from year to year. en_US
dc.language.iso en en_US
dc.subject Children en_US
dc.subject Abnormal Visual Acuity en_US
dc.subject Rural communities en_US
dc.subject Myopia en_US
dc.title Abnormal Visual Acuity Screening Among Secondary Pupils in Owerri Urban en_US
dc.type Thesis en_US


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