Concordance of static retinoscopy with reference standard in a group of students

Abstract

The protocol of the Iberoamerican Epidemiology Network in Visual and Ocular Health (Reisvo) was standardized through the development of a pilot study. Standardization was measured through the test’s repeatability and reproducibility, as well as through its degree of agreement with the reference standard. Methodology: There was evaluated a group of healthy schoolchildren between 5 and 15 years of age, who met the inclusion and exclusion criteria under the guidelines of Resolution 8430 of 1993. Two observers performed three measurements of static retinoscopy, and an expert performed cycloplegic retinoscopy. <em><strong>Results:</strong></em> Spherocylindrical forms were converted to Fourier analysis in three components: M, J₀ and J₄₅. Intra- and inter-examiner agreement, measured with intraclass correlation coefficient for static retinoscopy, was high in component M, both for intra- and inter-examiner agreement in static retinoscopy, and for correlation between static retinoscopy and cycloplegic retinoscopy. The agreement for components J₀ and J₄₅ was weak or zero, and they did not show clinical differences between observers. Conclusions: Static retinoscopy showed good repeatability and reproducibility compared to cycloplegic retinoscopy in implementing the Reisvo protocol.