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Archivos de la Sociedad Española de Oftalmología (English Edition) Validation of the color graduation scale in the optical nerve photograph, an alt...
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Vol. 97. Issue 7.
Pages 361-420 (July 2022)
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Vol. 97. Issue 7.
Pages 361-420 (July 2022)
Original article

Validation of the color graduation scale in the optical nerve photograph, an alternative for qualitative classification

Validación de la escala de graduación del color en la fotografía del nervio óptico, una alternativa para la clasificación cualitativa
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J. Morales Domíngueza,
Corresponding author
johannamoralesd@hotmail.com

Corresponding author.
, Ó.L. Teherán Forerob, M.M. Ochoa-Díazc, E.C. Ramos Clasond
a Universidad del Sinú, Clínica Oftalmológica de Cartagena, Cartagena, Colombia
b Departamento de Glaucoma, Clínica Oftalmológica de Cartagena, Cartagena, Colombia
c Grupo de investigación GIBACUS, Escuela de Medicina, Universidad del Sinú, Seccional Cartagena, Cartagena, Colombia
d Grupo de investigación GIBACUS, Escuela de Medicina, Universidad del Sinú, Seccional Cartagena, Cartagena, Colombia
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Abstract
Background

To validate objectively the proposed Teherán-Morales’s color grading scale, comparing to the subjective readings of specialists in optic nerve photography.

Methods

Concordance study and diagnostic tests, in which 150 photographs of the optic nerve were evaluated, from three groups, glaucomatous neuropathy, neuropathy of other origin and control group with the Teherán-Morales’s color scale and the analysis of three experts in optic nerve. Spearman’s Rho correlation was performed between both analysis methods.

Results

In the analysis of all the photographs using Spearman’s Rho, we found moderate correlations that were statistically significant P < 0.0001, the highest was in the temporal quadrant by observer 1 (r = 0.650 95% CI 0.546–0.733). In photographs of optic neuropathy, the correlations become moderately high, and statistically significant P < 0.0001, the highest correlation was for the temporal quadrant by observer 1 (r = 0.772 95% CI 0.626–0.865). In the glaucoma and normal eyes groups, there were moderate to low correlations with statistical significance P < 0.05.

Conclusions

The Teherán-Morales’s scale, for color grading, is useful in detecting color, correlates moderately with the subjective assessment of experts in the optic nerve having its best performance in optic neuropathy with very pale discs. However, in normal or glaucomatous optic discs, it has a low correlation, compared to the subjective clinical assessment.

Keywords:
Optic nerve color
Pallor
Optic neuropathy
Glaucoma
Optic nerve photography
Resumen
Objetivo

Validar de forma objetiva la escala de graduación del color Teherán-Morales propuesta, comparándola con las lecturas subjetivas de especialistas en lectura de fotografías del nervio óptico.

Material y métodos

Estudio de concordancia y pruebas diagnósticas, en el que 150 fotografías del nervio óptico fueron evaluadas, distribuidas en tres grupos, neuropatía glaucomatosa, neuropatía de otro origen y grupo control los cuales se sometieron a evaluación mediante la escala de color Teherán-Morales por parte de 3 expertos en nervio óptico independientes. Se realizó correlación Rho de Spearman entre ambos métodos de análisis.

Resultados

En el análisis de todas las fotografías mediante la rho de Spearman, encontramos correlaciones moderadas que fueron estadísticamente significativas P < 0,0001, la mayor de ellas fue por el observador 1 (r = 0,650 IC 95% 0,546 a 0,733) en el cuadrante temporal. En fotografías de neuropatía óptica, las correlaciones pasan a ser moderadas altas, y estadísticamente significativas P < 0,0001, siendo la correlación más alta para el cuadrante temporal por el observador 1 (r = 0,772 IC 95% 0,626 a 0,865). En los grupos de glaucoma y ojos normales, hubo correlaciones moderadas a bajas con significación estadística P < 0,05.

Conclusiones

La escala Teherán-Morales, para la graduación del color es útil en la detección del color, correlacionándose moderadamente con la valoración subjetiva de expertos en nervio óptico, teniendo su mejor desempeño en neuropatía óptica con discos muy pálidos. Sin embargo, en discos ópticos normales o glaucomatosos, tiene baja correlación, comparada con la valoración clínica subjetiva.

Palabras clave:
Color nervio óptico
Palidez
Neuropatía óptica
Glaucoma
Fotografía nervio óptico

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