dc.contributor |
Pujol Ramo, Jaume |
dc.contributor.author |
Ferrés Camps, Judit |
dc.date |
2017-09-08 |
dc.identifier.citation |
ETSETB-230.128609 |
dc.identifier.uri |
http://hdl.handle.net/2117/107913 |
dc.language.iso |
eng |
dc.publisher |
Universitat Politècnica de Catalunya |
dc.rights |
S'autoritza la difusió de l'obra mitjançant la llicència Creative Commons o similar 'Reconeixement-NoComercial- SenseObraDerivada' |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.rights |
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject |
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica |
dc.subject |
Eye -- Movements |
dc.subject |
Binocular vision |
dc.subject |
Eye movements |
dc.subject |
Near point of convergence |
dc.subject |
Eye-tracker |
dc.subject |
Fusional vergence |
dc.subject |
Ulls -- Moviments |
dc.subject |
Visió binocular |
dc.title |
Evaluation of human binocular function with an eye-tracker |
dc.type |
info:eu-repo/semantics/masterThesis |
dc.description.abstract |
En col·laboració amb la Universitat Autònoma de Barcelona (UAB), la Universitat de Barcelona (UB) i l’Institut de Ciències Fotòniques (ICFO) |
dc.description.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. |