Visual function alterations in essential tremor: A case report


Autoria(s): Piñero, David P.; Monllor Elías, Begoña; Moncho Gascón, Vicenta; Camps Sanchis, Vicente Jesús; Fez Saiz, Dolores de
Contribuinte(s)

Universidad de Alicante. Departamento de Óptica, Farmacología y Anatomía

Grupo de Óptica y Percepción Visual (GOPV)

Data(s)

04/06/2015

04/06/2015

26/05/2015

Resumo

Our purpose is to report alterations in contrast sensitivity function (CSF) and in the magno, parvo and koniocellular visual pathways by means of a multichannel perimeter in case of an essential tremor (ET). A complete evaluation of the visual function was performed in a 69-year old patient, including the analysis of the chromatic discrimination by the Fansworth–Munsell 100 hue test, the measurement of the CSF by the CSV-1000E test, and the detection of potential alteration patterns in the magno, parvo and koniocellular visual pathways by means of a multichannel perimeter. Visual acuity and intraocular pressure (IOP) were within the ranges of normality in both eyes. No abnormalities were detected in the fundoscopic examination and in the optical coherence tomography (OCT) exam. The results of the color vision examination were also within the ranges of normality. A significant decrease in the achromatic CSFs for right eye (RE) and left eye (LE) was detected for all spatial frequencies. The statistical global values provided by the multichannel perimeter confirms that there were significant absolute sensitivity losses compared to the normal pattern in RE. In the LE, only a statistically significant decrease in sensitivity was detected for the blue-yellow (BY) channel. The pattern standard deviation (PSD) values obtained in our patient indicated that there were significant localized losses compared to the normality pattern in the achromatic channel of the RE and in the red-green (RG) channel of the LE. Some color vision alterations may be present in ET that cannot be detected with conventional color vision tests, such as the FM 100 Hue.

Identificador

Journal of Innovative Optical Health Sciences. 2015, 8(5): 1550040 (5 pages). doi:10.1142/S1793545815500406

1793-5458 (Print)

1793-7205 (Online)

http://hdl.handle.net/10045/47288

10.1142/S1793545815500406

Idioma(s)

eng

Publicador

World Scientific Publishing

Relação

http://dx.doi.org/10.1142/S1793545815500406

Direitos

This is an Open Access article published by World Scientific Publishing Company. It is distributed under the terms of the Creative Commons Attribution 3.0 (CC-BY) License. Further distribution of this work is permitted, provided the original work is properly cited.

info:eu-repo/semantics/openAccess

Palavras-Chave #Multichannel perimetry #Essential tremor #Color vision #Visual pathways #Contrast sensitivity #Óptica
Tipo

info:eu-repo/semantics/article