Remote measurement of sphero-cylindrical lens power and orientation through distortion analysis

Jim Schwiegerling; Yuanxin Guan; Joseph M. Miller; Erin M. Harvey

doi:10.1117/12.2594953

7 September 2021 Remote measurement of sphero-cylindrical lens power and orientation through distortion analysis

Jim Schwiegerling, Yuanxin Guan, Joseph M. Miller, Erin M. Harvey

Proceedings Volume 11815, Novel Optical Systems, Methods, and Applications XXIV; 1181502 (2021) https://doi.org/10.1117/12.2594953
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Abstract

A system for measuring the orientation and power of sphero-cylindrical lenses has been developed. The system attempts to minimize the need for specialized equipment and training and instead relies on the ubiquitous cell phone camera, a magnetic stripe card, and a target pattern. By capturing an image of the target through the lenses under test and analyzing the distortion in the resulting image, the orientation and powers on sphero-cylindrical lenses can be determined. In modern eye clinics, the measurement of sphero-cylindrical spectacle lenses is readily measured with a lensmeter. However, there are many examples where this measurement is not feasible. This may include remote or rural locations where access to eye care may not exist, or require impractical travel. Furthermore, the on-going global pandemic has often put restrictions on contact between the patient and the eye care provider. Telemedicine, which can connect patients to eye care providers, lacks physical access to the spectacles for measurement. The system developed in this effort overcomes this limitation by allowing remote measurement of the lenses with items found in most households. Such a system would be beneficial to often underserved populations and expand access to quality eye care.

Conference Presentation

Citation Download Citation

Jim Schwiegerling, Yuanxin Guan, Joseph M. Miller, and Erin M. Harvey "Remote measurement of sphero-cylindrical lens power and orientation through distortion analysis", Proc. SPIE 11815, Novel Optical Systems, Methods, and Applications XXIV, 1181502 (7 September 2021); https://doi.org/10.1117/12.2594953

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available