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Vol. 92. Issue 2.
Pages 54-57 (February 2017)
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Vol. 92. Issue 2.
Pages 54-57 (February 2017)
Original article
Clinical features of optic nerve head in healthy newborns
Características clínicas de la cabeza del nervio óptico en recién nacidos sanos
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63
A. Guevara D.a,
Corresponding author
amnynow@gmail.com

Corresponding author.
, J.C. Juarez E.a,b
a Instituto Nacional de Pediatría – INP, Mexico City, Mexico
b Hospital Ángeles Pedregal, Mexico City, Mexico
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Table 1. Clinic optic nerve characteristics in healthy newborns.
Table 2. Published studies reporting optic disk sizes in newborns within term.
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Abstract
Objective

To determine the size and clinical features of the optical disk in healthy term infants.

Methodology

Descriptive, observational, cross-sectional, and retrospective study based on complete medical records of newborns at the Angeles Pedregal Hospital, Mexico DF, from May to August 2015. The measurements of the optical disk and clinical features were obtained from digital photographs and evaluated by 2 experts. Frequencies, means and standard deviation were calculated using the SPSS version 17.0 for Windows.

Results

The study included a total of 121 patients and 121 eyes. There were 65 males. The mean vertical diameter was 1.60±0.17mm, horizontal diameter 1.31±0.13mm, optical disk area 1.43±0.26mm2, and cup to disk ratio 0.25±0.11. The neuroretinal ring color was orange in 116 (95.9%) eyes. The cribriform plate was not visible in any patient, and in 90 (74.4%) eyes the appearance of the vessels in the papilla was central, and nasal in the rest. The cilioretinal artery was present in 38 (31.4%) eyes. A hyper- and hypo-pigmented peripapillary ring was observed in 114 eyes (94.2%).

Conclusion

The mean area of the optic nerve is 1.43±0.26mm2, slightly higher than previously reported. The mean cup to disk ratio is less than 0.3, as reported in the literature, and it is noteworthy that all eyes have a hyper-pigmented and hypo-pigmented peripapillary ring.

Keywords:
Optic disk
Size
Measurements
Newborn
Neonates
Resumen
Objetivo

Determinar el tamaño y características clínicas del disco óptico en recién nacidos sanos a término.

Metodología

Estudio descriptivo, observacional, transversal y retrospectivo basado en expedientes clínicos completos de recién nacidos en el Hospital Ángeles de Pedregal (Ciudad de México) entre mayo y agosto del 2015. Las medidas del disco óptico y las características clínicas fueron obtenidas de fotografías digitales y evaluadas por dosexpertos. Para los datos obtenidos utilizamos el cálculo de frecuencias, medias y desviación estándar con el programa SPSS versión 17.0 para Windows.

Resultados

Tuvimos un total de 121 pacientes y 121 ojos elegidos, 65 fueron varones. El diámetro vertical promedio fue de 1,60±0,17mm, el diámetro horizontal de 1,13±0,13mm, el área de disco óptico de 1,43±0,26mm2, la excavación de 0,25±0,11. El color del anillo neurorretiniano era naranja en 116 (95,9%) ojos. La lámina cribosa no era visible en ningún paciente, en 90 ojos (74,4%) la aparición de los vasos en la papila era central y nasal en los restantes. En 38 ojos (31,4%) estuvo presente la arteria ciliorretiniana. La presencia de un anillo peripapilar hiper- e hipopigmentado se evidenció en 114 ojos (94,2%).

Conclusión

El promedio de área del nervio óptico es 1,43±0,26mm2, ligeramente superior a lo reportado por otros autores; la excavación promedio es menor a 0,3, como se informa en la literatura y llama la atención que todos los ojos tienen un anillo peripapilar hiperpigmentado e hipopigmentado.

Palabras clave:
Disco óptico
Tamaño
Medidas
Recién nacido
Neonatos

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