
handle: 1959.4/unsworks_80356
RESUMEN Objetivos: Los hidrocarburos aromáticos son compuestos que pueden afectar el Sistema Nervioso Central (SNC), provocar neurotoxicidad y asociarse con alteraciones de la función visual. Objetivo general: Establecer la frecuencia de alteraciones en sensibilidad al contraste (SC) y estereopsis, en un grupo de trabajadores expuestos y un grupo no expuestos a hidrocarburos aromáticos. Materiales y métodos: estudio analítico de corte transversal. Muestra: grupo control 20 sujetos, edad media 25 años; grupo expuesto 20 sujetos, edad media 33,4 años. Se realizó valoración optométrica, se evaluaron las vías visuales bajas a través de una prueba de SC con el test FACT (Functional Acuity Contrast Test) y las vías visuales intermedias por la estereopsis con el test Frisby. Resultados: Existe diferencia clínica y estadísticamente significativa para los valores de las frecuencias espaciales de 3.0 cpd, 6.0 cpd y 12.0 cpd, del grupo control comparado con el grupo expuesto, al igual que en la estereopsis fina.
ABSTRACT Objectives: Aromatic hydrocarbons are compounds that can affect the Central Nervous System (CNS), cause neurotoxicity and be associated with alterations in visual function. Course objective: To establish the frequency of alterations in contrast sensitivity (SC) and stereopsis, in a group of exposed workers and a group not exposed to aromatic hydrocarbons. Materials and methods: cross-sectional analytical study. Sample: control group 20 subjects, average age 25; exposed group 20 subjects, mid age 33.4. An optometric assessment was performed; the low visual pathways were evaluated through an SC test with the FACT test (Functional Acuity Contrast Test) and the intermediate visual pathways by stereopsis with the Frisby test. Results: There is a clinically and statistically significant difference for the values of the spatial frequencies of 3.0 cpd, 6.0 cpd and 12.0 cpd, of the control group compared to the exposed group, as in the fine stereopsis.
toxic substances, aromatic hydrocarbons, 610, estereopsis, sustancias tóxicas, Contrast sensitivity, occupational exposure, Sensibilidad de contraste, hidrocarburos aromáticos, stereopsis, exposición laboral
toxic substances, aromatic hydrocarbons, 610, estereopsis, sustancias tóxicas, Contrast sensitivity, occupational exposure, Sensibilidad de contraste, hidrocarburos aromáticos, stereopsis, exposición laboral
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