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Perceived barriers to eye care use among secondary school students with pinhole-improvable reduced visual acuity in two schools in Kampala, Uganda: a cross-sectional study
Screening in two Kampala secondary schools identified 44 students whose reduced distance vision improved with a pinhole test. Their reported barriers to eye care are exploratory: the screening did not confirm refractive diagnoses, and the questionnaire was not validated for this adolescent setting.
Who was screened?
Researchers screened 407 students in two schools during March and April 2019. Although the schools were selected by lottery, students were recruited by convenience rather than probability sampling. Students in examination classes did not participate. The fraction of eligible students screened differed substantially between the government-aided and private school, which can affect the observed pattern.
What did the vision test establish?
Forty-four of the 407 screened students had reduced distance visual acuity that improved with a pinhole, about 10.8% of this screened group. Such improvement suggests a possible uncorrected refractive component. Standard refraction was not performed to determine the type or magnitude of a refractive error, so this is not a confirmed diagnosis or a prevalence estimate for all Kampala students.
Which barriers were reported?
Among the 44 students completing the barrier questionnaire, 23 selected fear of surgery and 22 did not know where to obtain an eye checkup. Multiple choices were allowed. These answers record students' perceptions; they do not establish that routine refractive care would involve surgery or that each selected barrier independently caused non-use of services.
Why do the denominators matter?
Only 25 students selected one most important barrier; the other 19 did not identify a single priority. Five of those 25 selected inability to pay for an eye checkup, giving 20% within the priority-response subgroup. This is not 20% of all 44 questionnaire respondents or of the 407 screened students. Fear of surgery was often selected as one barrier but was not selected as the single most important barrier. These two questions measure different things.
How could the questionnaire affect the answers?
The questionnaire originated in an adult survey in another setting and was not piloted or culturally validated for these Ugandan adolescents. Interviewers supplied explanations when needed. The authors note that some students may have confused routine non-invasive eye care with surgery, and that unfamiliar adult-oriented economic or practitioner terms could have been interpreted differently. An often-selected answer can therefore reflect comprehension as well as a real service barrier.
What can this study support?
The results identify questions for further local investigation about awareness, costs, family influence and perceptions of care. They do not show which intervention would increase service use. Confirmation would require refraction-based case definitions, stronger sampling and an adolescent-appropriate validated questionnaire. This original explanation uses the full paper, preserving the screening and response-subgroup limits rather than treating the results as confirmed diagnoses or citywide estimates.
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