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Corrección del error refractivo y productividad de los trabajadores recolectores en el sector cafetalero de

Bryce Everett¹, Andrew Hobbs², Brad Wong^1,3

¹Mettalytics, NSW, Australia.

Global public health

|January 19, 2026

Resumen

La corrección del error refractivo con gafas aumentó significativamente la productividad de la cosecha de café en un 7,9 % en trabajadores agrícolas guatemaltecos. Esta intervención rentable ofrece importantes beneficios financieros tanto para los trabajadores como para los propietarios de las fincas.

Área de la Ciencia:

Salud Pública
Oftalmología
Economía Agrícola

Sus antecedentes:

El error refractivo no corregido afecta la productividad económica mundial, particularmente en los países de ingresos bajos y medianos donde ocurre la mayor parte de la pérdida de visión evitable.
Existe una investigación limitada sobre los efectos de la corrección de la visión en la productividad en los sectores agrícolas de las naciones en desarrollo.

Objetivo del estudio:

Estimar el impacto de la provisión de gafas correctoras en la productividad de los recolectores de café de temporada en Guatemala.
Evaluar los beneficios y costos financieros de la corrección del error refractivo para los trabajadores y los propietarios de las fincas.

Principales métodos:

Un estudio que involucró a 332 recolectores de café de temporada en 12 fincas guatemaltecas durante la temporada de cosecha 2023-2024.
El grupo de intervención recibió gafas correctoras; la productividad se midió por los pesos de cosecha diarios.
Análisis estadístico utilizando modelos ANCOVA y de diferencias en diferencias, con análisis financiero de costo-beneficio.

Principales resultados:

Se observó un aumento significativo en la cosecha diaria promedio de 12,2 libras por trabajador (ganancia relativa del 7,9 %) en el grupo de intervención.
El costo de proporcionar gafas fue de $29,4 por trabajador.
Las relaciones costo-beneficio fueron de $10,9:1 para los trabajadores y de $2,6:1 para los propietarios de las fincas, lo que indica sólidos rendimientos financieros.

Conclusiones:

La corrección del error refractivo es una intervención altamente rentable con importantes beneficios productivos y económicos en la agricultura.
Esta intervención tiene el potencial de mejorar los medios de vida de millones de trabajadores agrícolas en todo el mundo.
Abordar el error refractivo no corregido ofrece una herramienta simple pero poderosa para el desarrollo económico.

Palabras clave:

ANCOVA Deficiencia visual agricultura análisis de costo-beneficio salud ocular

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