Research Papers: General

Measuring ultraviolet-visible light transmission of intraocular lenses: double-beam mode versus integrating-sphere mode

[+] Author Affiliations
Ali Akinay, Marcia D. Ong, Myoung Choi, Mutlu Karakelle

Alcon Research, Ltd., 6201 South Freeway, Fort Worth, Texas 76134-2099

J. Biomed. Opt. 17(10), 105001 (Oct 01, 2012). doi:10.1117/1.JBO.17.10.105001
History: Received June 11, 2012; Revised August 15, 2012; Accepted August 29, 2012
Text Size: A A A

Abstract.  This study compared integrating-sphere and double-beam methodologies for measuring the ultraviolet/visible transmission of intraocular lenses (IOLs). Transmission spectra of control IOLs and clinically explanted IOLs were measured with an optical spectrophotometer in two optical configurations: single-beam mode with integrating sphere detector and double-beam mode with photodiode detector. Effects of temperature and surface light scattering on transmittance were measured. Effects of lens power were measured and were modeled with ray-tracing software. Results indicated that transmission was consistent over a range of IOL powers when measured with the integrating-sphere configuration, but transmission gradually decreased with increasing IOL power (in a wavelength-dependent fashion) when measured with the double-beam configuration. Ray tracing indicated that the power-dependent loss in transmission was partially due to higher-powered IOLs spreading the light beam outside of the detector area. IOLs with surface light scattering had transmission spectra that differed between double-beam and integrating-sphere configurations in a power-dependent fashion. Temperature (ambient or physiological 35°C) did not affect transmission in the integrating-sphere configuration. Overall, results indicated that double-beam spectrophotometers may be useful for measuring transmittance of low-power IOLs, but an integrating-sphere configuration should be used to obtain accurate measurements of transmittance of higher-power IOLs.

Figures in this Article
© 2012 Society of Photo-Optical Instrumentation Engineers

Citation

Ali Akinay ; Marcia D. Ong ; Myoung Choi and Mutlu Karakelle
"Measuring ultraviolet-visible light transmission of intraocular lenses: double-beam mode versus integrating-sphere mode", J. Biomed. Opt. 17(10), 105001 (Oct 01, 2012). ; http://dx.doi.org/10.1117/1.JBO.17.10.105001


Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.