Refractive error in premature infants

Ton, Yokrat; Y, Wysenbeek; Spierer, Abraham

doi:10.1016/j.jaapos.2004.09.002

Cited by 18 publications

(13 citation statements)

References 20 publications

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“…Most studies looking at refractive error in term and preterm babies have either involved a small number of subjects [8], or refraction was done at term or later [13]. A study on preterms from 2 weeks to 6 months of age from Israel reported no correlation of refractive error to gestational age or birth weight [14]. It is possible that emmetropization occurs and refraction studies done later, miss this initial refractive error.…”

Section: Discussionmentioning

confidence: 99%

“…It is possible that emmetropization occurs and refraction studies done later, miss this initial refractive error. However, some authors suggest that emmetropization with age is not often complete and the initial refractive error during the critical phase of visual development may be one of the factors contributing to the high incidence of poor visual function found later in life in low birth weight children [8], [13], [14]. It has been suggested that the most important factor in the postnatal emmetropization of spherical equivalent refractive error is the modulation of axial growth in relation to the initial refractive error [15].…”

Section: Discussionmentioning

confidence: 99%

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Refractive Status at Birth: Its Relation to Newborn Physical Parameters at Birth and Gestational Age

et al. 2009

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BackgroundRefractive status at birth is related to gestational age. Preterm babies have myopia which decreases as gestational age increases and term babies are known to be hypermetropic. This study looked at the correlation of refractive status with birth weight in term and preterm babies, and with physical indicators of intra-uterine growth such as the head circumference and length of the baby at birth.MethodsAll babies delivered at St. Stephens Hospital and admitted in the nursery were eligible for the study. Refraction was performed within the first week of life. 0.8% tropicamide with 0.5% phenylephrine was used to achieve cycloplegia and paralysis of accommodation. 599 newborn babies participated in the study. Data pertaining to the right eye is utilized for all the analyses except that for anisometropia where the two eyes were compared. Growth parameters were measured soon after birth. Simple linear regression analysis was performed to see the association of refractive status, (mean spherical equivalent (MSE), astigmatism and anisometropia) with each of the study variables, namely gestation, length, weight and head circumference. Subsequently, multiple linear regression was carried out to identify the independent predictors for each of the outcome parameters.ResultsSimple linear regression showed a significant relation between all 4 study variables and refractive error but in multiple regression only gestational age and weight were related to refractive error. The partial correlation of weight with MSE adjusted for gestation was 0.28 and that of gestation with MSE adjusted for weight was 0.10. Birth weight had a higher correlation to MSE than gestational age.ConclusionThis is the first study to look at refractive error against all these growth parameters, in preterm and term babies at birth. It would appear from this study that birth weight rather than gestation should be used as criteria for screening for refractive error, especially in developing countries where the incidence of intrauterine malnutrition is higher.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Refractive Status at Birth: Its Relation to Newborn Physical Parameters at Birth and Gestational Age

et al. 2009

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“…2,3 Numerous ocular health challenges are also associated with prematurity. Children who are born premature are at greater risk of having morbid ocular conditions, including retinopathy of prematurity [4][5][6] and refractive error 7,8 . Moreover, eyes exhibiting retinopathy of prematurity continue to present with signs of myopia, and the degree, as well as frequency of myopia occurrence, is known to be related to retinopathy of prematurity status.…”

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Refractive Status in Nepalese Pre-Term and Full-Term Infants Early in Life

Uprety¹,

Morjaria

Shrestha

et al. 2017

Optom Vis Sci

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“…Como lo mostraron los resultados, no se encontró asociación entre el peso, la edad gestacional y el defecto refractivo. Esto concuerda con los estudios realizados por Ton (2004) en Israel, en prematuros de 2 semanas a 6 meses de edad, y por O' Connor (2006), quien encontró que no hubo asociación significativa entre el peso al nacer y el estado refractivo, en 572 niños con bajo peso al nacer (< 1,701 g).…”

Section: Discussionunclassified

Estudio retrospectivo del estado refractivo en niños prematuros de tres a cuatro meses de edad corregida, realizado en el programa Madre Canguro Integral, Hospital San Ignacio, Bogotá

Espinosa¹,

Price²

2012

Cienc. Tecnol. Salud Vis. Ocul.

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<p>El estado refractivo en los niños al nacer está dado por la asociación entre los parámetros ópticos y la longitud axial del globo ocular, que van cambiando con el desarrollo del niño hasta conseguir la emetropización. Objetivo: determinar el estado refractivo de niños prematuros de tres a cuatro meses de edad, corregido en el Programa Madre Canguro del Hospital San Ignacio. Materiales y métodos: se revisaron 4908 historias clínicas de pacientes atendidos entre el 1º de julio del 2004 y el 31 de junio del 2009. Resultados: 1731 historias clínicas cumplieron los criterios de inclusión (52,3 % hombres y 47,7 % mujeres). La mediana de la edad gestacional fue de 34 semanas (Q 4); la mediana del peso al nacer, 1880 gramos con (Q 570). El estado refractivo fue del 67,26 % para astigmatismo hipermetrópico, y cuando se clasificó en 64 categorías, este defecto representó el 8,55 % (categoría 14 con esferas de +3,00 a +3,75, con cilindros de -1,00 a -1.75). No se encontró asociación estadísticamente significativa entre el defecto refractivo y el peso al nacer (p = 0,08), la edad gestacional (p = 0,582), la clasificación de Luchenco (p = 0,968) y el suministro de oxígeno (p = 0,568). Conclusiones: el defecto refractivo más frecuente en los prematuros es el astigmatismo hipermetrópico, que coincide con el proceso de emetropización; no hay correlación entre la maduración del niño al nacer y el grado de hipermetropía y no se encontró correlación entre el nivel de oxígeno y el grado de ametropía.</p>

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Refractive error in premature infants

Cited by 18 publications

References 20 publications

Refractive Status at Birth: Its Relation to Newborn Physical Parameters at Birth and Gestational Age

Refractive Status at Birth: Its Relation to Newborn Physical Parameters at Birth and Gestational Age

Refractive Status in Nepalese Pre-Term and Full-Term Infants Early in Life

Estudio retrospectivo del estado refractivo en niños prematuros de tres a cuatro meses de edad corregida, realizado en el programa Madre Canguro Integral, Hospital San Ignacio, Bogotá

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