Rubén D. Danza

University of Buenos Aires

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Rafael Iribarren

Favaloro Foundation

Abel Szeps

Hospital Posadas

Laura Fejerman

University of California, Davis

Carla Lança

New York University

Monica Andreola

Luis Zeman

University of Buenos Aires

Timo‐Kolja Pförtner

University of Cologne

Guillermo Saracco

Centro de Investigaciones Cardiovasculares

Sebastián Dankert

University of Warmia and Mazury in Olsztyn

M Comba

Università degli Studi del Piemonte Orientale “Amedeo Avogadro”

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University of Buenos Aires

Hospital Posadas

University of Warmia and Mazury in Olsztyn

Charité - Universitätsmedizin Berlin

Instituto Politécnico de Lisboa

Universidade Nova de Lisboa

University of Cologne

University Hospital Cologne

Schmid (Germany)

Institute of Sociology

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Prevalencia de astigmatismo alto en la provincia de Salta, Argentina

Luis Zeman Rubén D. Danza Laura Fejerman Rafael Iribarren

Purpose: Refractive errors are the first cause of visual impairment across the world. Prevalence data are crucial for planning visual health strategies, since early detection and treatment of refractive errors in children has a key role on normal vision development. This is the largest report in Argentina that has studied refractive errors under cycloplegic refraction in school-aged children.Methods: Cross-sectional population based study, which involved school children aged 4-15 year-old examined from March to November 2014. Automated cycloplegic refractive error measurement and subjective refraction were performed. Myopia was considered as the spherical equivalent refractive error +2.00 D. For the purpose of this study, astigmatism was considered as that equal or greater than -2.00 diopters.Results: The sample consisted of 1852 children aged 8.03 ± 2.57 years, range 4 to 15 years of whom 967 (52.2%) were females. 116 subjects (6.26%) had a spherical equivalent lower or equal than -0.50 diopters and there were 111 (5.99%) subjects with refractive cylinder ≤ -2.00 diopters (limit -7.50 diopters). In the Seclantas zone (mountainside) the sample comprised 157 children, of whom 20 (12.75%) had astigmatic values in the right eyes ≤ than -2.00 diopters.Conclusion: An elevated prevalence of high astigmatism and a very low prevalence of myopia were found in this population. Future studies including diverse populations with high prevalence of high astigmatism could contribute to a better understanding of the relevant factors in the etiology of this trait.

Astigmatism

Subjective refraction

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Prevalence of High Astigmatism in Salta Province, Argentina

SSRN Electronic Journal (2021)

Luis Zeman Bardeci Rubén D. Danza Laura Fejerman Rafael Iribarren

Background: Refractive errors are the first cause of visual impairment across the world. Prevalence data are crucial for planning visual health strategies, since early detection and treatment of refractive errors in children has a key role on normal vision development. This is the largest report in Argentina that has studied refractive errors under cycloplegic refraction in school-aged childreMethods: Cross-sectional population based study, which involved school children aged 4-15 year-old examined from March to November 2014. Automated cycloplegic refractive error measurement and subjective refraction were performed. Myopia was considered as the spherical equivalent refractive error <-0·50 dioptres, hyperopia as >+2·00 D. For the purpose of this study, astigmatism was considered as that equal or greater than -2·00 dioptres.Findings: The sample consisted of 1852 children aged 8·03 ± 2·57 years, range 4 to 15 years of whom 967 (52·2%) were females. 116 subjects (6·26%) had a spherical equivalent lower or equal than -0·50 dioptres and there were 111 (5·99%) subjects with refractive cylinder ≤ -2·00 dioptres (limit -7·50 dioptres). In the Seclantas zone (mountainside) the sample comprised 157 children, of whom 20 (12·75%) had astigmatic values in the right eyes ≤ than -2·00 dioptres. Interpretation: An elevated prevalence of high astigmatism and a very low prevalence of myopia were found in this population. Future studies including diverse populations with high prevalence of high astigmatism could contribute to a better understanding of the relevant factors in the etiology of this trait.Funding Information: None.Declaration of Interests: None of the authors have any proprietary interests or conflicts of interest related to this submission.Ethics Approval Statement: This screening was approved by the local authorities of Salta. The present study was also approved by the Ethics Committee of the Argentinian Council of Ophthalmology. Two weeks before the ocular exam took place in each school an informed consent was sent as homework for the parents to allow and sign for the examination. All data were treated confidentially in accordance to the Declaration of Helsinki and Argentine Laws.

Astigmatism

10.2139/ssrn.3839399

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Agudeza visual en ojos con alto astigmatismo en Salta, Argentina

Oftalmología clínica y experimental. (2024)

Rubén D. Danza Abel Szeps Rafael Iribarren Carla Lança

Objetivo: Identificar los factores que afectan a la agudeza visual no corregida (AVNC) en ojos con astigmatismo alto.Método: Este estudio clínico se realizó en una clínica oftalmológica de la región noroeste de la Argentina. La población de estudio consistió en todos los pacientes consecutivos de entre 10 y 40 años de edad con astigmatismo bilateral superior a 2 dioptrías (D) en al menos un ojo. El protocolo incluyó pruebas de agudeza visual con y sin corrección y estenopeica, queratometría, diámetro pupilar escotópico, refracción subjetiva y refracción objetiva con cicloplejía.Resultados: Un total de 405 pacientes fueron incluidos en el estudio. Su edad media era de 22,04 ± 10,62 años y el 52,3% eran mujeres (n=212). El equivalente esférico medio fue de -1,53 ± 1,79 D y la pupila escotópica media fue de 5,4 ± 0,3 mm. En el análisis de regresión logística lineal múltiple, excluyendo a los ambliopes, una peor AV estenopeica (Odds ratio[OR]: 8,19; intervalos de confianza del 95% [CI]: 4,76 a 14,07; p<0,001) y un mayor tamaño de la pupila escotópica se asociaron significativamente con una peor AVC. La presencia de ambliopía se asoció con un mayor diámetro pupilar (OR:4,37; IC 95%: 1,60 a 11,97; p=0,004).Conclusiones: Este estudio reveló que el tamaño pupilar afecta a la AVNC en ojos astigmáticos de sujetos que viven en un entorno rural. Por lo tanto, son necesarios más estudios para comprender si la corrección del astigmatismo debe tener en cuenta el tamaño de la pupila, la AV estenopeica y la AVNC.

10.70313/2718.7446.v17.n03.346

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Role of tutorial classes and full day schooling on self-reported age of myopia onset: findings in a sample of Argentinian adults

Journal of American Association for Pediatric Ophthalmology and Strabismus (2022)

Carla Lança Abel Szeps Rafael Iribarren Abel Szeps Florencia Cortínez

Age groups

10.1016/j.jaapos.2022.08.525

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