Quantification of glistenings in intraocular lenses using a ballistic-photon removing integrating-sphere method

An alternative method for quantification of glistenings in intraocular lenses (IOLs) using an integrating sphere with an adjustable back aperture to remove ballistic photons is presented. Glistenings in soft IOLs have been known for more than a decade; however, their severity and visual impact are s...

Full description

Saved in:
Bibliographic Details
Published in:Applied optics 2011-12, Vol.50 (35), p.6461-6467
Main Authors: Kim, Do-Hyun, James, Robert H, Landry, Robert J, Calogero, Don, Anderson, James, Ilev, Ilko K
Format: Article
Language:English
Subjects:
Adjustable
Computer Simulation
Density
Evaluation
Humans
Integrating spheres
Intraocular lenses
Lasers
Lens Implantation, Intraocular
Lenses, Intraocular - adverse effects
Optical Phenomena
Phacoemulsification
Photons
Scattering
Scattering, Radiation
Visual
Visual Acuity
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An alternative method for quantification of glistenings in intraocular lenses (IOLs) using an integrating sphere with an adjustable back aperture to remove ballistic photons is presented. Glistenings in soft IOLs have been known for more than a decade; however, their severity and visual impact are still under investigation. A number of studies have been made to quantitatively describe glistenings in IOLs. Quantization and precise grading of IOLs will provide needed information to evaluate the severity and visual impact of glistenings in patients. We investigated the use of a simple modification of an integrating-sphere method to eliminate ballistic photons to quantitatively measure scattered light from glistenings in IOLs. The method described in this paper provides a simple and effective way to quantitatively characterize glistenings in vitro. It may be especially useful to quantify scattering associated with low-grade glistenings where the density of the scattering centers is low. Finally, the modified integrating-sphere method may also be generally applicable to quantitatively characterize scattering from other optical media.
ISSN:1559-128X
2155-3165
1539-4522
DOI:10.1364/AO.50.006461