Fixation Stability in Monkeys with Strabismus

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dc.contributor.advisorDas, Vallabh E.
dc.contributor.committeeMemberChino, Yuzo M.
dc.contributor.committeeMemberBedell, Harold E.
dc.creatorPirdankar, Onkar Harishchandra
dc.date.accessioned2019-06-24T20:20:53Z
dc.date.available2019-06-24T20:20:53Z
dc.date.createdDecember 2013
dc.date.issued2013-12
dc.date.submittedDecember 2013
dc.date.updated2019-06-24T20:20:53Z
dc.description.abstractPurpose: To assess the effect of target parameters on fixation stability in strabismic monkeys. Methods: Eye movements were recorded in one normal and three strabismic monkeys during 72 fixation conditions (4 shapes; 3 sizes; 2 backgrounds; OD, OS or OU viewing), each repeated 5 times. Fixation stability was quantified using the Bivariate Contour Ellipse Area (BCEA). Influence of target parameters was assessed using 4-way ANOVA. Results: BCEA was greater in the strabismic monkeys compared to the normal. In strabismus, BCEA of the deviated eye was significantly greater than BCEA in the fixating eye. Target shape and size significantly influenced fixation stability in both normal and strabismic monkeys. Background effects were idiosyncratic. Conclusions: Target parameters that influence fixation stability in a normal, also affects fixation stability in disease conditions such as strabismus. Target parameter influences likely function via conjugate mechanisms since proportional effects were observed in both viewing and covered eyes.
dc.description.departmentOptometry, College of
dc.format.digitalOriginborn digital
dc.format.mimetypeapplication/pdf
dc.identifier.urihttps://hdl.handle.net/10657/4101
dc.language.isoeng
dc.rightsThe author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s).
dc.subjectStrabismus
dc.subjectEye movements
dc.subjectFixation stability
dc.titleFixation Stability in Monkeys with Strabismus
dc.type.dcmiText
dc.type.genreThesis
thesis.degree.collegeCollege of Optometry
thesis.degree.departmentOptometry, College of
thesis.degree.disciplinePhysiological Optics and Vision Science
thesis.degree.grantorUniversity of Houston
thesis.degree.levelMasters
thesis.degree.nameMaster of Science

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