Deflectometric method for the measurement of user power for ophthalmic lenses



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Quiroga Mellado, Juan Antonio and Gómez Pedrero, José Antonio and Alonso Fernández, José and Vargas, Javier (2010) Deflectometric method for the measurement of user power for ophthalmic lenses. Applied Optics, 49 (27). pp. 5125-5132. ISSN 0003-6935

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This paper presents a deflectometric technique to measure the power of an ophthalmic lens as perceived by the user. It is based on a calibrated camera acting as a pinhole in order to measure ray deflection along the same path as the visual axis when the lens is held in front of the eye. We have analyzed numerically the accuracy of our technique, and it has been compared experimentally with a commercial "lens mapper" and with the real user power calculated from the measured topography of the lens surfaces to state the reliability and accuracy of the presented technique.

Item Type:Article
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© 2010 Optical Society of America.
This work has been financially supported by the Spanish Ministry of Science and Technology through
the project number DPI2009-09023. It has also benefited from the framework of the Spanish Optometry Network.

Uncontrolled Keywords:Progressive-Addition Lens, Off-Axis Measurements, Phase Objects, Camera
Subjects:Sciences > Physics > Optics
ID Code:22768
Deposited On:13 Sep 2013 09:41
Last Modified:07 Feb 2014 10:51

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