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INTRODUCTION: Keratoconus is an ectatic corneal disorder that causes low vision secondary to high myopia, irregular astigmatism, and loss of corneal transparency. In children, the disease behaves aggressively, progresses rapidly, is diagnosed at advanced stages, and presents an increased risk for corneal transplantation; however, only few studies in children have been conducted. PURPOSE: The aims of this study were to determine the frequency of keratoconus in patients younger than 18 years who underwent the Pentacam study because of high myopia or high astigmatism in the oblique axis, analyze topographic criteria and classify them into severity groups, and identify associated risk factors. METHODS: This was a retrospective observational cross-sectional study in which Pentacam examinations were analyzed. Frequency of keratoconus was determined and patients were classified according to visual acuity and severity scales. Medical records were reviewed to identify associated risk factors. RESULTS: Four hundred twenty-six patients younger than 18 years were included, 40 (9.4%) had keratoconus according to Pentacam criteria. The mean age at diagnosis was 14.9 years, with male predilection (75%). Atopy was the only statistically significant risk factor, present in 85%. Family history was present in 7.5%. There were no differences in the distribution in groups according to visual acuity or Amsler-Krumeich scale. Most frequent ABCD classification was A2 (35.6%), B4 (47.9%), and C0 (35.6%), posterior curvature radius being a significant severity criterion. CONCLUSIONS: The study found that frequency of keratoconus in children is higher than previously reported. Atopy has a clear and possible causal association. Early detection should be sought to reduce the risk of progression. Pentacam is a fundamental tool for early diagnosis using simple criteria.

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Resumen Las tecnologias facilitan la comunicación y la interacción e influyen en los comportamientos y actitudes. Sin embargo, pueden causar impacto negativo cuando interneren en las actividades cotidianas y afectan la salud mental, física y social. El objetivo del estudio fue analizar la relación entre el uso problemático de Facebook, la evitación experiencial y los componentes de la teoría biopsicosocial. Estudio de tipo correlacional con diseno transversal no experimental. En total participaron 677 jóvenes colombianos, que diligenciaron de manera voluntaria los cuestionarios de datos sociodemográficos, la escala de Aceptación y Acción-II (AAQ-II) y la escala de Adicción a Facebook de Bergen (BFAS). Los resultados muestran que los hombres presentaron mayor uso problemático de la red social y puntuaron más alto en los componentes de abstinencia y conflicto. Se encontró una relación positiva significativa entre el uso problemático, la evitación experiencial y todos los componentes de la teoría biopsicosocial. En conclusión, la evitación experiencial aporta a la comprensión del uso problemático de Facebook desde el análisis funcional y la teoría Biopsicosocial que orienta en la identificación de la sintomatología adictiva; estos hallazgos permiten direccionar futuras intervenciones.

Abstract Technologies facilitate communication and interaction, and influence behavior and attitudes. However, they can have a negative impact when they interfere with everyday activities that affect mental, physical, and social health. The objective of the study was to analyze the relationship between the problematic use Facebook, experiential avoidance, and components of the biopsychosocial theory. This study was of a correlational type with a non-experimental cross-sectional design. A total of 677 young Colombians participated, who voluntarily filled out the socio-demographic data questionnaires, the Acceptance and Action-II scale (AAQ-II), and the Bergen Facebook Addiction Scale (BFAS). The results show that men present more problematic use of the social network and scored higher on the abstinence and conflict components. A significant positive relationship was found between the problematic use, experiential avoidance, and all components of the biopsychosocial theory. In conclusion, the experiential avoidance contributes to the understanding of the problematic use Facebook from the functional analysis, and the biopsychosocial theory guides in the identification of the addictive symptomatology. These findings allow directing future interventions.