Academic literature on the topic 'Phoropter'

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Journal articles on the topic "Phoropter"

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Castellanos, Efrain, and Kevin Phan. "Fusional Vergence differences between manual phoropter and automated phoropter." Journal of Vision 17, no. 10 (2017): 160. http://dx.doi.org/10.1167/17.10.160.

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Steinhuber, W. "Eine neue Skiaskopierhilfe am Phoropter." Klinische Monatsblätter für Augenheilkunde 187, no. 11 (1985): 385–86. http://dx.doi.org/10.1055/s-2008-1054341.

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Wu, Huang, Shu Liu, and Ruiqing Wang. "Stereoacuity measurement using a phoropter combined with two 4K smartphones." Clinical and Experimental Optometry 101, no. 2 (2017): 272–75. http://dx.doi.org/10.1111/cxo.12614.

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CASILLAS, ELIZABETH CASILLAS, and MARK ROSENFIELD. "Comparison of Subjective Heterophoria Testing With a Phoropter and Trial Frame." Optometry and Vision Science 83, no. 4 (2006): 237–41. http://dx.doi.org/10.1097/01.opx.0000214316.50270.24.

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Marks, Randall, David L. Mathine, Gholam Peyman, Jim Schwiegerling, and N. Peyghambarian. "Adjustable adaptive compact fluidic phoropter with no mechanical translation of lenses." Optics Letters 35, no. 5 (2010): 739. http://dx.doi.org/10.1364/ol.35.000739.

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Lee, Hyung Kyun, Won Young Jung, and Mijung Park. "Evaluation of Reliability for Spectacles Prescription Using Auto Phoropter and Trial Lens." Journal of Korean Ophthalmic Optics Society 24, no. 1 (2019): 61–69. http://dx.doi.org/10.14479/jkoos.2019.24.1.61.

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Lee, Hyung Kyun, So Ra Kim, and Mijung Park. "Evaluation of Reliability for Combined Refractive Power of Lenses in an Automatic Phoropter." Journal of Korean Ophthalmic Optics Society 20, no. 4 (2015): 501–9. http://dx.doi.org/10.14479/jkoos.2015.20.4.501.

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FRANTZ, KELLY A., and JANICE E. SCHARRE. "Comparison of Disparometer Fixation Disparity Curves as Measured With and Without the Phoropter." Optometry and Vision Science 67, no. 2 (1990): 117–22. http://dx.doi.org/10.1097/00006324-199002000-00010.

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Oh, Kwang-Keun, Hyun Gug Cho, Byeong-Yeon Moon, Sang-Yeob Kim, and Dong-Sik Yu. "Change in Lateral Phoria under a Phoropter and Trial Frame in Phoria Tests." Journal of Korean Ophthalmic Optics Society 25, no. 4 (2020): 395–403. http://dx.doi.org/10.14479/jkoos.2020.25.4.395.

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Lee, Ju-Whan, Koo-Seok Lee, and Hyung-Ki Hong. "Research of Difference between the Refractive Powers by Autorefractometer and the Prescription using Phoropter." Journal of Korean Ophthalmic Optics Society 19, no. 2 (2014): 231–37. http://dx.doi.org/10.14479/jkoos.2014.19.2.231.

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Dissertations / Theses on the topic "Phoropter"

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Peyman, Gholam A., Jim Schwiegerling, Babak Amirsolaimani, Arkady Bablumyan, Nickolaos Savidis, and Nasser N. Peyghambarian. "An automatic holographic adaptive phoropter." SPIE-INT SOC OPTICAL ENGINEERING, 2017. http://hdl.handle.net/10150/627074.

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Phoropters are the most common instrument used to detect refractive errors. During a refractive exam, lenses are flipped in front of the patient who looks at the eye chart and tries to read the symbols. The procedure is fully dependent on the cooperation of the patient to read the eye chart, provides only a subjective measurement of visual acuity, and can at best provide a rough estimate of the patient's vision. Phoropters are difficult to use for mass screenings requiring a skilled examiner, and it is hard to screen young children and the elderly etc. We have developed a simplified, lightweig
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Amirsolaimani, Babak, Gholam Peyman, Jim Schwiegerling, Arkady Bablumyan, and N. Peyghambarian. "A new low-cost, compact, auto-phoropter for refractive assessment in developing countries." NATURE PUBLISHING GROUP, 2017. http://hdl.handle.net/10150/626058.

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Using a phoropter to measure the refractive error is one of the most commonly used methods by ophthalmologists and optometrists. Here, we demonstrate design and fabrication of a portable automatic phoropter with no need for patient's feedback. The system is based on three tunablefocus fluidic lenses and thin-film holographic optical elements to perform automatic refractive error measurement and provide a diagnostic prescription without supervision. Three separate lenses are deployed to correct the defocus and astigmatism. The refractive error is measured using a ShackHartmann wavefront sensor
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Marks, Randall Lee. "Fluidic Astigmatic and Spherical Lenses for Ophthalmic Applications." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/193956.

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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 wavefron
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Chancy, Carl Henri. "Application of Fluidic Lens Technology to an Adaptive Holographic Optical Element See-Through Auto-Phoropter." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/347085.

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A device for performing an objective eye exam has been developed to automatically determine ophthalmic prescriptions. The closed loop fluidic auto-phoropter has been designed, modeled, fabricated and tested for the automatic measurement and correction of a patient's prescriptions. The adaptive phoropter is designed through the combination of a spherical-powered fluidic lens and two cylindrical fluidic lenses that are orientated 45° relative to each other. In addition, the system incorporates Shack-Hartmann wavefront sensing technology to identify the eye's wavefront error and corresponding pr
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Savidis, Nickolaos. "Application and System Design of Elastomer Based Optofluidic Lenses." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/255155.

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Adaptive optic technology has revolutionized real time correction of wavefront aberrations. Optofluidic based applied optic devices have offered an opportunity to produce flexible refractive lenses in the correction of wavefronts. Fluidic lenses have superiority relative to their solid lens counterparts in their capabilities of producing tunable optical systems, that when synchronized, can produce real time variable systems with no moving parts. We have developed optofluidic fluidic lenses for applications of applied optical devices, as well as ophthalmic optic devices. The first half of t
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Huang, Chieh-Tse, and 黃介澤. "An integrated phoropter combined both defocus and astigmatic lenses with adaptive optics correction." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/47184627041038702216.

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碩士<br>國立中央大學<br>光機電工程研究所<br>102<br>Fluidically controlled lenses which adaptively correct prescribed refractive error without mechanically moving parts are extensively applied in the ophthalmic applications. Capable of variable-focusing properties, however, the associated aberrations due to curvature change and refractive index mismatch can inherently degrade image quality severely. Here we present the experimental study of the aberrations in tunable astigmatic lens and use of adaptive optics to compensate for the wavefront errors. Characterization of the optical properties of the individual l
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Books on the topic "Phoropter"

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Campbell, Gary L. Phoroptors: Early American instruments of refraction and those who used them. Gary L. Campbell, 2008.

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Book chapters on the topic "Phoropter"

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Awwal, Abdul, and Scot Olivier. "Design and Testing of a Liquid Crystal Adaptive Optics Phoropter." In Adaptive Optics for Vision Science. John Wiley & Sons, Inc., 2005. http://dx.doi.org/10.1002/0471914878.ch18.

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Conference papers on the topic "Phoropter"

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Peyman, Gholam A., Jim Schwiegerling, Babak Amirsolaimani, Arkady Bablumyan, Nickolaos Savidis, and Nasser N. Peyghambarian. "An automatic holographic adaptive phoropter." In Biosensing and Nanomedicine X, edited by Hooman Mohseni, Massoud H. Agahi, and Manijeh Razeghi. SPIE, 2017. http://dx.doi.org/10.1117/12.2276807.

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Awwal, Abdul Ahad S., Brian J. Bauman, Donald T. Gavel, et al. "Characterization and operation of a liquid crystal adaptive optics phoropter." In Optical Science and Technology, SPIE's 48th Annual Meeting, edited by Robert K. Tyson and Michael Lloyd-Hart. SPIE, 2003. http://dx.doi.org/10.1117/12.510393.

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Zhang, Jiyan, Wenli Liu, and Jie Sun. "Theoretical considerations and measurements for phoropters." In Seventh International Symposium on Instrumentation and Control Technology, edited by Jiancheng Fang and Zhongyu Wang. SPIE, 2008. http://dx.doi.org/10.1117/12.807368.

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Jiyan, Zhang, Sun Jie, Gao Mingliang, and Yang Lei. "Metrological Research on Test Method for Phoropters." In 2007 8th International Conference on Electronic Measurement and Instruments. IEEE, 2007. http://dx.doi.org/10.1109/icemi.2007.4350468.

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Li, Fei, Lin Li, Xiang Ding, and Wenli Liu. "Application of laser differential confocal technique in back vertex power measurement for phoropters." In 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), edited by Yudong Zhang, Libin Xiang, and Sandy To. SPIE, 2012. http://dx.doi.org/10.1117/12.975924.

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Ficocelli, Maurizio, Azhar Iqbal, and Foued Ben Amara. "Low Cost Adaptive Optics System for Retinal Imaging." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-42391.

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This paper presents the design of an Adaptive Optics (AO) system for retinal imaging applications. The development of retinal imaging systems allows for early diagnosis of eye diseases. Such systems can increase the quality of life of patients as well as curtail increasing health care costs through early eye disease detection and treatment. Until recently, AO systems have been prohibitively expensive and cumbersome. This has been mainly due to the size and cost of flexible membrane mirrors normally used as the aberration correction device. Recent developments in the technology of Microelectrom
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