Comput Math Methods Med - Analysis of visual appearance of retinal nerve fibers in high resolution fundus images: a study on normal subjects.

Tópicos

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Resumo

The retinal ganglion axons are an important part of the visual system, which can be directly observed by fundus camera. The layer they form together inside the retina is the retinal nerve fiber layer (RNFL). This paper describes results of a texture RNFL analysis in color fundus photographs and compares these results with quantitative measurement of RNFL thickness obtained from optical coherence tomography on normal subjects. It is shown that local mean value, standard deviation, and Shannon entropy extracted from the green and blue channel of fundus images are correlated with corresponding RNFL thickness. The linear correlation coefficients achieved values 0.694, 0.547, and 0.512 for respective features measured on 439 retinal positions in the peripapillary area from 23 eyes of 15 different normal subjects.

Resumo Limpo

retin ganglion axon import part visual system can direct observ fundus camera layer form togeth insid retina retin nerv fiber layer rnfl paper describ result textur rnfl analysi color fundus photograph compar result quantit measur rnfl thick obtain optic coher tomographi normal subject shown local mean valu standard deviat shannon entropi extract green blue channel fundus imag correl correspond rnfl thick linear correl coeffici achiev valu respect featur measur retin posit peripapillari area eye differ normal subject

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