Evaluation of human binocular function with an eye-tracker
Visualitza/Obre
Estadístiques de LA Referencia / Recolecta
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/107913
Tipus de documentProjecte Final de Màster Oficial
Data2017-09-08
Condicions d'accésAccés obert
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continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
This study was designed to investigate if the velocity of the stimulus used during the near point
of convergence (NPC) exam affected the performance of the vergence system. The effects of target’s
distance and ocular dominancy were also analyzed. 14 patients with a mean ± SD age of 26.3 ± 4.6 years
participated in the study. The target used to measure the NPC was moved at three different velocities (20,
35 and 50 mm/s) along a motorized rail while the eye movements of the patient were registered with an
eye-tracker. The vergence error was analyzed considering the overall range of target’s distances, and the
initial and final periods. The mean ± SD vergence error obtained for the total range are: 1.05º ± 0.82º (20
mm/s), 1.13º ± 0.84º (35 mm/s) and 1.24º ± 0.89º (50 mm/s). The results obtained considering the near
range of distances are: 3.04º ± 1.81º (20 mm/s), 3.14º ± 1.91º (35 mm/s) and 3.36º ± 1.95º (50 mm/s).
Finally, the vergence error considering the initial part of the movement are: 0.49º ± 0.15º (20 mm/s), 0.48º
± 0.13º (35 mm/s) and 0.50º ± 0.14º (50 mm/s). There are not significant differences in vergence error with
the different velocities. However, the vergence error is significantly greater when more convergence is
needed. Although there is no significant effect of ocular dominancy on vergence error there is a trend
demonstrating that the greater the interocular difference in vergence error, the more likely the most accurate
eye agreed with the dominant eye.
Descripció
En col·laboració amb la Universitat Autònoma de Barcelona (UAB), la Universitat de Barcelona (UB) i l’Institut de Ciències Fotòniques (ICFO)
Col·leccions
Fitxers | Descripció | Mida | Format | Visualitza |
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TFM - Judit Ferrés.pdf | 2,592Mb | Visualitza/Obre |