Evaluation of Fixation Disparity Curve using Mallett Unit.
نویسندگان
چکیده
منابع مشابه
Evaluation of Fixation Disparity Curve Parameters With the Modified Near Mallett Unit in Symptomatic and Asymptomatic University Students
BACKGROUND Research suggests that fixation disparity data are extremely useful in the assessment of the binocular and accommodative systems. OBJECTIVES The purpose of this study was to evaluate fixation disparity curve (FDC) parameters with a modified near Mallett unit in symptomatic and asymptomatic students of Paramedical Sciences School of Mashhad University of Medical Sciences in 2007. ...
متن کاملevaluation of fixation disparity curve parameters with the modified near mallett unit in symptomatic and asymptomatic university students
conclusions the x-intercepts (point at which the fdc crosses the x-axis) were on average more in the base-in direction, y-intercepts (point at which the fdc crosses the y-axis) were shifted in the exo direction, and slopes were steeper in the symptomatic group. results there were more subjects with exo fixation disparity than eso fixation disparity in the study sample. the means for fixation di...
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The Mallett Fixation Disparity Test: influence of test instructions and relationship with symptoms.
Fixation disparity is a minute ocular misalignment under conditions of binocular single vision and is typically detected in primary eye care practices in the UK using the Mallett Unit Fixation Disparity Test. This instrument creates natural viewing conditions, when the patient's binocular system is fused using both central and peripheral fusion locks. This allows the examiner to determine the m...
متن کاملVergence Dynamics Predict Fixation Disparity
The neural origin of the steady-state vergence eye movement error, called binocular fixation disparity, is not well understood. Further, there has been no study that quantitatively relates the dynamics of the vergence system to its steady-state behavior, a critical test for the understanding of any oculomotor system. We investigate whether fixation disparity can be related to the dynamics of op...
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ژورنال
عنوان ژورنال: JAPANESE ORTHOPTIC JOURNAL
سال: 1993
ISSN: 1883-9215,0387-5172
DOI: 10.4263/jorthoptic.21.133