Aim: To study forward light-scattering characteristics of calcified explanted intraocular lenses (IOLs) (Aquasense, Ophthalmic Innovation International Ontario).
Methods: The amount of light scattered by the opacified IOLs was measured using a validated in vitro set-up for angles from 1.7° to 22°. This set-up gives results directly comparable with straylight values as valid for the in vivo situation.
Results: Straylight is highest at large angles and declines steeply approaching 0° angle. This corresponds to the in vivo findings that opacified IOLs cause important visual complaints but have little effect on visual acuity. At 7.5°, log (s) is around 1.8 and 2.9 for the two lenses respectively. This corresponds to 8× and 100× increases in straylight values compared with values in young, normal eyes.
Conclusion: High straylight values caused by opacified IOLs can explain subjective complaints of reduced quality of vision in patients with opacified implants, despite good visual acuity.
Statistics from Altmetric.com
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.
Competing interests: None.
Funding: This study was supported in part by Dutch Grant IS062031.