The variation of phoria with age.
نویسندگان
چکیده
منابع مشابه
Characteristics and variability of vertical phoria adaptation in normal adults.
We evaluated the characteristics of phoria adaptation for vertically induced retinal disparity. An adaptive change in the fusion-free ocular alignment, phoria adaptation, was measured with a computer-aided mirror haploscope at 10, 30, and 60 minutes after the start of wearing of a 3-prism-diopter base up prism by 35 normal subjects ranging in age from 21 to 67 years (mean: 37 years). The relati...
متن کاملImpaired vertical phoria adaptation in patients with cerebellar dysfunction.
PURPOSE To determine whether phoria adaptation to a vertical prism disparity is altered in patients with cerebellar dysfunction. METHODS With a computer-aided haploscope, adaptive responses of fusion-free eye position to a 10- or 30-minute period was measured in subjects wearing a 3-prism diopter vertical prism over one eye. Thirteen patients with well-documented cerebellar diseases who did n...
متن کاملThe relationship between phoria and the ratio of convergence peak velocity to divergence peak velocity.
PURPOSE The purpose of this study was to investigate the relationship between phoria and the dynamics of vergence eye movements as described by the ratio of convergence average peak velocity to divergence average peak velocity, termed the vergence peak velocity ratio. METHODS Phoria and vergence step responses were recorded. Three measures of phoria were assessed: baseline phoria, which is th...
متن کاملSuggestive association with ocular phoria at chromosome 6p22.
PURPOSE We conducted a genome-wide association study to identify genetic factors that contribute to the etiology of heterophoria. METHODS We measured near and far vertical and horizontal phorias in 988 healthy adults aged 16 to 40 using the Keystone telebinocular with plates 5218 and 5219. We regressed degree of phoria against genotype at 642758 genetic loci. To control for false positives, w...
متن کاملComparison of Four Dissociated Phoria Tests: Reliability & Correlation with Symptom Survey Scores
Previous studies have found the modified Thorington test and the Howell phoria card test to be more repeatable than the von Graefe test. Another potential way to assess the value of a test could be to correlate test results with the level of symptoms. Near dissociated phorias were measured with the modified Thorington, Howell phoria card, and von Graefe procedures with 50 subjects between the a...
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ورودعنوان ژورنال:
- American journal of optometry and archives of American Academy of Optometry
دوره 25 11 شماره
صفحات -
تاریخ انتشار 1948