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مقاله
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Abstract
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Title:
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Validity of preschool vision screening by health staff in Iran
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Author(s):
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Hassan Hashemi , Abbasali Yekta , Ebrahim Jafarzadehpur, Nooshin Dadbin, Sara Soroush, Reyhane Shariati, Mehdi Khabazkhoob
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Presentation Type:
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Oral
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Subject:
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Strabismus & Neuro-ophthalmology
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Others:
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Presenting Author:
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Name:
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Mehdi Khabaz khob
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Affiliation :(optional)
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Noor Ophthalmology Research Center, Noor Eye Hospital, Tehran, Iran
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E mail:
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khabazkhoob@yahoo.com
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Phone:
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Mobile:
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09120250544
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Purpose:
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To determine the sensitivity, specificity, positive predictive value(PPV), and negative predictive value(NPV) of the vision screening for 7 year old children in Iran
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Methods:
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In this cross-sectional study, eight cities in Iran were selected through multistage cluster sampling. A total of 4614 schoolchildren were selected, 4106 of which participated in the study. All vision tests, were conducted by an optometrist at the school site. Results were compared against those recorded on each child’s health card
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Results:
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Based on our test results, 8.49% (95% CI, 7.65 to 9.39) of the examinees had a vision problem. The sensitivity rate of the screening by health staff was 38.15% (95% CI, 33.01 to 43.50) and the specificity rate was 93.11 (95%CI 92.25 to 93.90). The PPV and NPV were 33.93 (29.24 to 38.88) and 94.19 (93.39 to 94.93), respectively. For the uncorrected visual acuity tested by health staff compared to optometrists, the area under the ROC surface was 0.741 (p<0.001).
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Conclusion:
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The validity of vision screening among schoolchildren by health staff is low. In order to reduce the percentage of false negative patients, some complementary examinations like refractive errors and near visual acuity measurements or also further training of health staff should be considered.
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Attachment:
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