Fluidic Astigmatic and Spherical Lenses for Ophthalmic Applications

Persistent Link:
http://hdl.handle.net/10150/193956
Title:
Fluidic Astigmatic and Spherical Lenses for Ophthalmic Applications
Author:
Marks, Randall Lee
Issue Date:
2010
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Fluidic lenses have been developed for ophthalmic applications. The lenses use a pressure differential to deform a membrane, which separates two fluids with different indexes of refraction. The change in membrane shape creates changes in the optical wavefront. By utilizing different boundary conditions on the membrane, the progression of the membrane shape can be controlled. Specifically, a circular restraint is used to produce optical power, whereas a rectangular restraint is used to produce a combination of power and astigmatism. These lenses are analyzed for dominant properties and wavefront quality. By combining 2 rectangular restraint lenses at 45° and a circular restraint lens, both orthogonal second order Zernike astigmatisms as well as second order power can be independently controlled. This combination can also be described as independent control of ophthalmic cylinder, cylinder axis, and power, which is required to create a basic phoropter. A fluidic phoropter is demonstrated and analyzed in this manuscript.
Type:
text; Electronic Dissertation
Keywords:
Astigmatism; Cylinder; Fluidic; Lens; Membrane; Phoropter
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Optical Sciences; Graduate College
Degree Grantor:
University of Arizona
Advisor:
Peyghambarian, Nasser
Committee Chair:
Peyghambarian, Nasser

Full metadata record

DC FieldValue Language
dc.language.isoENen_US
dc.titleFluidic Astigmatic and Spherical Lenses for Ophthalmic Applicationsen_US
dc.creatorMarks, Randall Leeen_US
dc.contributor.authorMarks, Randall Leeen_US
dc.date.issued2010en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractFluidic lenses have been developed for ophthalmic applications. The lenses use a pressure differential to deform a membrane, which separates two fluids with different indexes of refraction. The change in membrane shape creates changes in the optical wavefront. By utilizing different boundary conditions on the membrane, the progression of the membrane shape can be controlled. Specifically, a circular restraint is used to produce optical power, whereas a rectangular restraint is used to produce a combination of power and astigmatism. These lenses are analyzed for dominant properties and wavefront quality. By combining 2 rectangular restraint lenses at 45° and a circular restraint lens, both orthogonal second order Zernike astigmatisms as well as second order power can be independently controlled. This combination can also be described as independent control of ophthalmic cylinder, cylinder axis, and power, which is required to create a basic phoropter. A fluidic phoropter is demonstrated and analyzed in this manuscript.en_US
dc.typetexten_US
dc.typeElectronic Dissertationen_US
dc.subjectAstigmatismen_US
dc.subjectCylinderen_US
dc.subjectFluidicen_US
dc.subjectLensen_US
dc.subjectMembraneen_US
dc.subjectPhoropteren_US
thesis.degree.namePh.D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplineOptical Sciencesen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorPeyghambarian, Nasseren_US
dc.contributor.chairPeyghambarian, Nasseren_US
dc.contributor.committeememberSchwiegerling, Jamesen_US
dc.contributor.committeememberPeyman, Gholamen_US
dc.contributor.committeememberMathine, Daviden_US
dc.identifier.proquest10878en_US
dc.identifier.oclc752260948en_US
All Items in UA Campus Repository are protected by copyright, with all rights reserved, unless otherwise indicated.