Estudio comparativo entre cover test, videoculógrafo Perea ® y estrabómetro GazeLab ® en la medición de la desviación ocular
- Narváez Palazón, Carlos
- Rosario Gómez de Liaño Director
- M. Nieves Moreno Director
- Elena Hernandez Garcia Director
Defence university: Universidad Complutense de Madrid
Fecha de defensa: 14 September 2021
- José M. Ramírez Sebastian Chair
- Carmen Méndez Hernández Secretary
- Laura Cabrejas Martínez Committee member
- Diego Puertas Bordallo Committee member
- Olga Seijas Leal Committee member
Type: Thesis
Abstract
The gold standard of measuring and characterizing deviation angle in strabismus patients is cover test (CT). This technique not only measures (either in grades or prismatic diopters), the deviation angle, but also estimates its variability along time or how it differs depending on gaze position or fixating eye. Nevertheless, some factors may influence the result of this test: the variability of strabismus itself, the experience of the examiner, the dissociation technique, point of neutralization or the target distance. In the latest years, new devices known as video-oculographers have been developed. These devices can, amongst many other functions, measure the deviation angle through an eye recording system. In Spain, Perea video-oculographer ® (VP) (Synapsis, France, 2008) and GazeLab strabometer ® (GL) (BcnInnova, Spain, 2011) are the only two commercialized video-oculographers.