Performance of the Lea symbols chart for screening Nigerian children aged 3 to 5 years

Obajolowo, TS; Olatunji, FO; Ademola–Popoola, DS; Popoola, GO

doi:10.4103/njcp.njcp_204_19

Cited by 2 publications

(4 citation statements)

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“…VA testing is the most widely used method for screening vision among preschool children [ 35 , 36 ]. The Lea Symbols chart has been experimentally verified to be both a valid and reliable measure of VA. As is desirable in a good vision test kit, each of the four optotypes used in this symbol test has been proven to measure VA similarly and to blur equally, thus supporting the test’s internal consistency [ 37 , 38 ]. A previous study by Bertuzzi et al showed that the Lea Symbols 15-line folding distance chart was clinically useful in detecting deficiencies in VA among preschool children [ 39 ].…”

Section: Discussionmentioning

confidence: 84%

Validity of vision screening program conducted by preschool teachers: An interventional study

Mezbah¹,

Omar²,

Isa³

et al. 2022

Med Hypothesis Discov Innov Ophthalmol

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Background: Clear vision is crucial for effective learning among preschool children. Hence, early detection of vision impairment and prompt treatment are required to improve prognosis. Currently, limited information is available, and no program exists to screen for vision impairment among preschoolers in Bangladesh. This study aimed to validate the KieVision™ Preschool Vision Screening Kit, translated into the Bengali language, to improve vision impairment detection among preschool children. Methods: In this prospective case–control study, 60 preschool teachers from Chittagong were randomly selected. The study group was trained to conduct vision screening among preschool children using the translated kit, whereas the control group was trained using the Chittagong Eye Infirmary and Training Complex (CEITC) School Teachers’ Training Module. Fifteen preschool children aged 4–6 years were screened by each preschool teacher and again by the optometrist. Results: Sixty preschool teachers screened 900 children. The results showed a higher validity of vision screening findings by the preschool teachers in the study group (sensitivity, 68.00%; specificity, 92.75%) than in the control group (sensitivity 47.37%, specificity 70.39%). The level of agreement between the preschool teachers and optometrists was high for all tests (first-order agreement coefficient [AC1] ? 0.80 in the study group). The sensitivity and specificity of the visual acuity test for the study group were 59.65% and 94.15%, respectively, while in the control group it was 13.33% and 62.54%, respectively. A similar trend was noted in the general observation component and Hirschberg’s test. Conclusions: The Bengali Language KieVision™ Preschool Vision Screening Kit can be used effectively by preschool teachers in vision screening programs to improve the identification of vision impairment among preschool children in Bangladesh.

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Section: Discussionmentioning

confidence: 84%

Validity of vision screening program conducted by preschool teachers: An interventional study

Mezbah¹,

Omar²,

Isa³

et al. 2022

Med Hypothesis Discov Innov Ophthalmol

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“…Visual impairments were defined to be equal to or below VA of 6/9. 5 in 10 studies, 30,34,35,37,39,40,42,43,48 seven studies 9,22,34,35,36,37,38 presented VA equal to or below 6/12 and two presented VA below 6/18. 25,35 Visual acuity was not recorded in seven studies (see Table 1).…”

Section: Visual Impairmentmentioning

confidence: 94%

“…34,39 Refractive errors causing VI varied from 0.7% 39 to 81%. 35 Visual acuity amongst preschoolers requires a visual acuity test valid for preschoolers such as LEA symbols and Tumbling E. 36,40…”

Section: Visual Impairmentmentioning

confidence: 99%

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Visual impairments amongst preschool and school attendees: A scoping review of vision school screening in Nigeria and Kenya

Langeggen

Ofochebe

2022

Afr. vis. eye health

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Background: The United Nations Convention on the Rights of the Child emphasises the importance of quality education and good health. Vision problems affect the academic performance of schoolchildren in developing and under-resourced countries. The most prevalent vision problem amongst children is uncorrected refractive errors (URE). Aim: To gain knowledge about vision problems and visual impairments (VI) through school vision screening amongst children in Kenya and Nigeria. Method: A scoping review of online databases (Web of Science and PubMed) and one African registry (African Journals Online) for articles from January 2011 until April 2021 was conducted. The authors included 26 articles of the 439 screened. Results:The literature revealed inconsistencies in how VI was defined. The main cause of vision problems is URE. Furthermore, there is a lack of systematic school vision screening tools and programmes. Conclusion:Efficient eye care services to schoolchildren aged 3-18 years in Kenya and Nigeria must involve multiple disciplinary interventions and governmental responsibility. Collaboration models between public and private health sectors, nongovernmental organisations and families are necessary to prevent VI amongst children. Better vision enhances school performance.

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Performance of the Lea symbols chart for screening Nigerian children aged 3 to 5 years

Cited by 2 publications

References 1 publication

Validity of vision screening program conducted by preschool teachers: An interventional study

Validity of vision screening program conducted by preschool teachers: An interventional study

Visual impairments amongst preschool and school attendees: A scoping review of vision school screening in Nigeria and Kenya

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