Browsing University of Waterloo by Author "Sreenivasan, Vidhyapriya"
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Adaptation to near addition lenses - Effect of AV/A ratio and age
Sreenivasan, Vidhyapriya (University of Waterloo, 2007-05-17)AIM: The primary purpose of this thesis was to evaluate the pattern of changes to accommodation and phoria when pre-presbyopic individuals perform near work for 20 minutes with +2D lenses. In addition, the thesis also ... -
Binocular Adaptation to +2 D Lenses in Myopic and Emmetropic Children:
Sreenivasan, Vidhyapriya; Irving, Elizabeth; Bobier, William (Wolters Kluwer, 2009-06)Purpose. To compare vergence adaptation to +2 D addition lenses in myopic and emmetropic children and to evaluate the influence of the accommodative-vergence crosslink (AC/A ratio) on this adaptation. Methods. Nine ... -
Binocular adaptation to near addition lenses in emmetropic adults
Sreenivasan, Vidhyapriya; Irving, Elizabeth; Bobier, William (Elsevier, 2008-05)Near addition lenses are prescribed to pre-presbyopic individuals for treatment of binocular motor problems such as convergence excess and to control the progression of myopia. To date, no investigation has looked at the ... -
Can current models of accommodation and vergence predict accommodative behavior in myopic children?
Sreenivasan, Vidhyapriya; Irving, Elizabeth; Bobier, William (Elsevier, 2014-08)Investigations into the progression of myopia in children have long considered the role of accommodation as a cause and solution. Myopic children show high levels of accommodative adaptation, coupled with accommodative lag ... -
Effect of heterophoria type and myopia on accommodative and vergence responses during sustained near activity in children
Sreenivasan, Vidhyapriya; Irving, Elizabeth; Bobier, William (Elsevier, 2012-03-15)The influence of phoria-type and myopia on changes to vergence and accommodation during prolonged near-task was examined in 53 children. Participants were classified into phoria and refractive categories based on near ... -
Effect of near adds on the variability of accommodative response in myopic children
Sreenivasan, Vidhyapriya; Irving, Elizabeth; Bobier, William (Wiley, 2011-03)Purpose: Higher variability of accommodative response (VAR) has been reported in myopes and speculated to be a possible risk factor for the progression of myopia. We investigated whether near adds of +2D and −2D were capable ... -
Near addition lenses as a tool to investigate vergence adaptation in myopic children
Sreenivasan, Vidhyapriya (University of Waterloo, 2011-08-12)Accommodation and vergence are two interacting ocular motor systems that function to maintain clear and single vision across a wide range of distances. Sustained fixation results in the adaptation of these ocular motor ...