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Photographic simulation of off-axis blurring due to chromatic aberration in spectacle lenses.

Abstract
Spectacle lens materials of high refractive index (nd) tend to have high chromatic dispersion (low Abbé number [V]), which may contribute to visual blurring with oblique viewing. A patient who noted off-axis blurring with new high-refractive-index spectacle lenses prompted us to do a photographic simulation of the off-axis aberrations in 3 readily available spectacle lens materials, CR-39 (nd = 1.50), polyurethane (nd = 1.60), and polycarbonate (nd = 1.59). Both chromatic and monochromatic aberrations were found to cause off-axis image degradation. Chromatic aberration was more prominent in the higher-index materials (especially polycarbonate), whereas the lower-index CR-39 had more astigmatism of oblique incidence. It is important to consider off-axis aberrations when a patient complains of otherwise unexplained blurred vision with a new pair of spectacle lenses, especially given the increasing promotion of high-refractive-index materials with high chromatic dispersion.
AuthorsPavle Doroslovački, David L Guyton
JournalJournal of AAPOS : the official publication of the American Association for Pediatric Ophthalmology and Strabismus (J AAPOS) Vol. 19 Issue 1 Pg. 91-3 (Feb 2015) ISSN: 1528-3933 [Electronic] United States
PMID25727601 (Publication Type: Journal Article)
CopyrightCopyright © 2015 American Association for Pediatric Ophthalmology and Strabismus. Published by Elsevier Inc. All rights reserved.
Topics
  • Eyeglasses (adverse effects)
  • Humans
  • Middle Aged
  • Myopia (therapy)
  • Optics and Photonics
  • Photography (methods)
  • Prosthesis Failure
  • Refractometry
  • Vision Disorders (diagnosis, etiology)

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